基于stm32固件库的的spi 对NRF905SE无线模块操作的API
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前段时间，写了一个基于stm32的spi 对无线模块 NRF905SE 操作的C语言API，整个设计采用了一种分层的函数式的思想，在此拿来和大家一起分享，和大家共同交流，希望大家指正！
废话少说，上代码：
1. NRF905SE 模块的的的头文件：
/******************** (C) COPYRIGHT 2011 sdu emlib ************************ filename: nrf905.h***description: This file provides the declarations in NRF905SE.***author: wzb***date: 2011/5/13*********************************************************************//**** prevent the recursive inclusion *********/#ifndef __NRF905SE_H_#define __NRF905SE_H_/*** include files *****/#include "stm32f10x_lib.h"/***************射频芯片相关定义***************/#define NRF905SE_BufferSize 32#define NRF905SE_AddressSize 4#define NOP 0xFF/*** SPI 全双工时的空操作 ***//*****************全局变量**********************/extern u8 NRF905SE_TxBuffer[NRF905SE_BufferSize]; /*****发送数据所在数组***/extern u8 NRF905SE_RxBuffer[NRF905SE_BufferSize]; /*****接收数据所在数组***/extern u8 NRF905SE_TxAddress[NRF905SE_AddressSize]; /*****发送地址所在数组***/extern u8 NRF905SE_RxAddress[NRF905SE_AddressSize]; /*****接收地址所在数组***/extern u8 TxAddress[NRF905SE_AddressSize];extern u8 RxAddress[NRF905SE_AddressSize];extern u8 NRF905SE_DR_FLAG; /**数据发送完成或接受完成标志！**///------------define the SPI using-----------#define SPI_USING SPI1/****************NRF905SE引脚配置*************/#define NRF905SE_CE_PIN GPIO_Pin_0 /*** A0 ***/#define NRF905SE_TX_EN_PINGPIO_Pin_3/*** A3 ***/#define NRF905SE_CSN_PINGPIO_Pin_4/*** A4 ***/ // SPI1 NSS#define NRF905SE_DR_PINGPIO_Pin_0/*** C0 ***/#define NRF905SE_AM_PIN GPIO_Pin_1 /*** C1 ***/#define NRF905SE_CD_PINGPIO_Pin_2/*** C2 ***/#define NRF905SE_PWR_UP_PINGPIO_Pin_3 /*** C3 ***/#define NRF905SE_IRQ_PIN GPIO_Pin_0/*** C0 ***//**** SPI SELECTED /DESELECTED ***/#define NRF905SE_POWER_ON() GPIOC->BSRR = NRF905SE_PWR_UP_PIN#define NRF905SE_POWER_OFF() GPIOC->BRR = NRF905SE_PWR_UP_PIN#define NRF905SE_CSN_ON() GPIOA->BSRR = NRF905SE_CSN_PIN /*** SPI SELECTED CANCEL ***/#define NRF905SE_CSN_OFF() GPIOA->BRR = NRF905SE_CSN_PIN /*** SPI SELECTED ***/#define NRF905SE_SPI_START()NRF905SE_CSN_OFF()#define NRF905SE_SPI_END() NRF905SE_CSN_ON()#define NRF905SE_CE_ON() GPIOA->BSRR = NRF905SE_CE_PIN#define NRF905SE_CE_OFF() GPIOA->BRR = NRF905SE_CE_PIN#define NRF905SE_STANDBY()NRF905SE_CE_OFF()#define NRF905SE_SHOCKBURST_TRX()NRF905SE_CE_ON()#define NRF905SE_Standby() NRF905SE_CE_OFF()#define NRF905SE_ShockBurst_TRx()NRF905SE_CE_ON()#define NRF905SE_TX_EN_ON() GPIOA->BSRR = NRF905SE_TX_EN_PIN#define NRF905SE_TX_EN_OFF() GPIOA->BRR = NRF905SE_TX_EN_PIN#define NRF905SE_MODE_TX() NRF905SE_TX_EN_ON()#define NRF905SE_MODE_RX() NRF905SE_TX_EN_OFF()/****************op of data ready flag: dr indentify ****/#define NRF905SE_Is_Data_RxFinished() NRF905SE_DR_FLAG#define NRF905SE_Is_Data_TxFinished() NRF905SE_DR_FLAG#define NRF905SE_Reset_Data_RxFinished_Flag() NRF905SE_DR_FLAG = 0#define NRF905SE_Reset_Data_TxFinished_Flag() NRF905SE_DR_FLAG = 0//#define NRF905SE_IsDataReady() ( GPIOA->IDR & NRF905SE_DR_PIN)/**************NRF905SE外部中断源配置************/#define GPIO_PORT_SOURCE_IRQ_NRF905SE GPIO_PortSourceGPIOA#define GPIO_PIN_SOURCE_IRQ_NRF905SE GPIO_PinSource3#define EXTI_LINE_IRQ_NRF905SE EXTI_Line3typedef enum {CRCMode_8bit = 0,CRCMode_16bit} CRCMode;/*********************NRF905SE SPI接口 控制指令 宏定义**************/#define NRF905SE_WC 0x00 // 设置配置寄存器 (write RF-Configeration Register)#define NRF905SE_RC0x10// 读取配置寄存器 (read RF-Configeration Register)#define NRF905SE_WAR0x01//设置自动重传 AUTO_RETRAN 模式 (set:0x20\ restset:0x00)#define NRF905SE_RAR0x11//读取自动重传 AUTO_RETRAN 模式 (set:0x20\ restset:0x00)#define NRF905SE_WTRX_AFW 0x02// 设置收发地址格式的宽度（字节个数）(Bit[7]:没用; TX_AFW[2:0] Bit[3]:没用; RX_AFW[2:0] 默认值 0100_0100 : 0x44)#define NRF905SE_RTRX_AFW 0x12 // 读取收发地址格式的宽度（字节个数）(Bit[7]:没用; TX_AFW[2:0] Bit[3]:没用; RX_AFW[2:0] 默认值0100_0100 : 0x44 )#define NRF905SE_WRX_PW 0x03//设置接受数据的rx-payload寄存器的有效数据的宽度 (Bit[7:6]没用RX_PWR[5:0] 默认值 0010_0000 : 0x20)#define NRF905SE_RRX_PW 0x13//读取接受数据的rx-payload寄存器的有效数据的宽度 (Bit[7:6]没用RX_PWR[5:0] 默认值 0010_0000 : 0x20)#define NRF905SE_WTX_PW 0x04//设置接受数据的tx-payload寄存器的有效数据的宽度 (Bit[7:6]没用RX_PWR[5:0] 默认值 0010_0000 : 0x20)#define NRF905SE_RTX_PW 0x14//读取接受数据的tx-payload寄存器的有效数据的宽度 (Bit[7:6]没用RX_PWR[5:0] 默认值 0010_0000 : 0x20)#define NRF905SE_WRA0x05// 设置位于配置寄存器第5-8的4个字节的Rx-Address (write RX-Address)#define NRF905SE_RRA0x15// 读取位于配置寄存器第5-8的4个字节的Rx-Address(read Rx-Address)#define NRF905SE_WCRC 0x09 // 设置CRC 校验的模式#define NRF905SE_RCRC 0x19 // 读取CRC 校验的模式#define NRF905SE_WTP0x20// 向TX-Payload 寄存器写入有效数据 (write the payload data to the Tx-payload register)#define NRF905SE_RTP 0x21// 从Tx-payload 寄存器中读出有效数据 read the payload data in the Tx-payload register)#define NRF905SE_WTA 0x22// 向Tx-Address 寄存器写入发送地址，即目标地址(write the destination address in the Tx-Address register)#define NRF905SE_RTA0x23// 从Tx-Address寄存器读取发送地址，(read the destination address from the Tx-Address register)#define NRF905SE_RRP0x24// 从Tx-Payload 寄存器中读取接收到的有效数据(read the payload data from the Rx-Payload register)/*------------ NRF905SE functions ---------------------------------------*/void NRF905SE_SetRxMode(void);void NRF905SE_SetTxMode(void);bool NRF905SE_RxPacket(void);bool NRF905SE_TxPacket(void);void NRF905SE_Configuration(void);void NRF905SE_EXTI_DoIt(void);/*****NRF905SE初始化，包括设置默认配置及发送、接收地址****/void NRF905SE_Configuration(void);/*---------------------------NRF905SE MODE setting functions------------------*/void NRF905SE_SetSPIMode(void);void NRF905SE_SetTxMode(void);void NRF905SE_SetRxMode(void);/*----------------endof NRF905SE MODE setting functions----------------------*//*------------NRF905SE functions -------------------------------------*/bool NRF905SE_IsAutoRetranEnable(void);boolNRF905SE_GetAutoRetranMode(void);voidNRF905SE_SetAutoRetranMode(bool auto_retran_en);bool NRF905SE_IsCRCModeEnable(void);u8 NRF905SE_GetCRCMode(void);voidNRF905SE_SetCRCMode(CRCMode CRC_mode);u8 NRF905SE_GetRxAddressSize(void);void NRF905SE_SetRxAddressSize(u8 size) ;u8 NRF905SE_GetTxAddressSize(void);void NRF905SE_SetTxAddressSize(u8 size);u8 NRF905SE_GetRxPayloadSize(void);void NRF905SE_SetRxPayloadSize(u8 size);u8 NRF905SE_GetTxPayloadSize(void);void NRF905SE_SetTxPayloadSize(u8 size);u8 * NRF905SE_GetTxPayload(u8 * payload_array, u8 payload_array_length);void NRF905SE_SetTxPayload(const u8 * addr_array, u8 addr_array_length);u8 * NRF905SE_GetRxPayload(u8 * payload_array, u8 payload_array_length);void NRF905SE_SetRxPayload(const u8 * addr_array, u8 addr_array_length);void NRF905SE_SetTxAddress( const u8 * addr_array, u8 addr_array_length);u8 * NRF905SE_GetTxAddress(u8 * addr_array, u8 addr_array_length);void NRF905SE_SetRxAddress(const u8 * addr_array, u8 addr_array_length);u8 * NRF905SE_GetRxAddress(u8 * addr_array, u8 addr_array_length);void NRF905SE_SendData(void);void NRF905SE_ReceiveData(void);bool NRF905SE_SendTxPacket(const u8 * payload_array, u8 payload_size, const u8 * tx_address_array, u8 tx_address_length);bool NRF905SE_SendPacket(const u8 * payload_array, u8 payload_size);u8 * NRF905SE_ReceivePacket(u8 * payload_array, u8 payload_size);//外部中断处理函数void NRF905SE_EXTI_DoIt();#endif /** END OF DEFINE __NRF905SE_H_ ****/
2. NRF905SE模块的功能函数的实现:
/******************** (C) COPYRIGHT 2011 sdu emlib ************************ filename: nrf905.c***description: This file provides the fuctions implemented in NRF905SE.***author: wzb***date: 2011/5/13*********************************************************************//***********************include files *******************************/#include "nrf905.h"/*********************** global variables ***************************/u8 NRF905SE_RxBuffer[NRF905SE_BufferSize];u8 NRF905SE_TxBuffer[NRF905SE_BufferSize] = { 0x30,0x32,0x33,0x41, 0x42,0x43,0x44,0x45, 0x30,0x32,0x33,0x41, 0x42,0x43,0x44,0x45,//16 0x30,0x32,0x33,0x41, 0x42,0x43,0x44,0x45, 0x30,0x32,0x33,0x41, 0x42,0x43,0x44,0x45//32 //54};u8 NRF905SE_TxAddress[NRF905SE_AddressSize] = {0x31, 0x32, 0x33, 0x34};u8 NRF905SE_RxAddress[NRF905SE_AddressSize] = {0x30, 0x31, 0x32, 0x33};u8 TxAddress[NRF905SE_AddressSize];u8 RxAddress[NRF905SE_AddressSize];u8 NRF905SE_DR_FLAG = 0;/************************NRF905SE configer register type**********/typedef struct __NRFConfig__ { u8 NRF905SE_Config_Length; /* the bytes size of the configer */ u8 NRF905SE_Config_Buf[10];}NRF905SE_InitTypeDef;u8 NRF905SE_Config_Buf[11] ={ 10, //配置命令 数组的长度 0x4c, //CH_NO,配置频段在430MHZ 0x0c, //输出功率为10db,不重发，节电为正常模式 0x44, //地址宽度设置，为4字节 0x20,0x20, //接收发送有效数据长度为32字节 0xCC,0xCC,0xCC,0xCC, //接收地址 0x58, //CRC充许，8位CRC校验，外部时钟信号不使能，16M晶振};/*---------------------- NRF905SE biscal read/write functions ---------------*/static void NRF905SE_GPIO_Config(void);static void NRF905SE_NVIC_Config(void);static void NRF905SE_EXTI_Config(void);static void NRF905SE_InitWriteCR(void);static void SPI_SendByte(SPI_TypeDef * SPIx, u8 data);static u8 SPI_ReceiveByte(SPI_TypeDef * SPIx) ;static u8 NRF905SE_ReadReg_u8(u8 op);static void NRF905SE_WriteReg_u8(u8 op, u8 value);static u8 NRF905SE_ReadWriteReg_u8(u8 op, u8 value);static void NRF905SE_WriteReg_Byte(u8 op, u8 value) ;static u8NRF905SE_ReadReg_Byte(u8 op);static u8 * NRF905SE_ReadReg_Bytes(u8 op_r, u8* arrayPtr, u8 arraySize);static void NRF905SE_WriteReg_Bytes(u8 op_w, const u8* arrayPtr, u8 arraySize);static u8 * NRF905SE_GetTxRxAddress(u8 op_r, u8* addr_array, u8 addr_array_length);static void NRF905SE_SetTxRxAddress(u8 op_w, const u8 * addr_array, u8 addr_array_length);/*------------end of NRF905SE biscal read/write functions ------------------*//******************************************* 函数功能：NRF905SE GPIO配置 入口参数：无 返回： 无 备注： 配置IRQ、CSN(SPI的NSS引脚)、CE引脚 CSN引脚的模式为普通的输出，而不是复用*********************************************/static void NRF905SE_GPIO_Config(void){ GPIO_InitTypeDef GPIO_InitStructure; /* clock enable **/ RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOC| RCC_APB2Periph_AFIO, ENABLE); /* NRF905SE CE pin configuration PA.00 */ GPIO_InitStructure.GPIO_Pin = NRF905SE_CE_PIN; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOA, &GPIO_InitStructure); /* NRF905SE Tx_EN pin configuration PA.03*/ GPIO_InitStructure.GPIO_Pin = NRF905SE_TX_EN_PIN; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOA, &GPIO_InitStructure); /* NRF905SE CSN pin configuration PA.04 */ GPIO_InitStructure.GPIO_Pin = NRF905SE_CSN_PIN; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOA, &GPIO_InitStructure); /* NRF905SE IRQ pin configeration PC.00 */ GPIO_InitStructure.GPIO_Pin = NRF905SE_IRQ_PIN; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOC, &GPIO_InitStructure); /* NRF905SE_AM_PIN pin configuration PC.01*/ GPIO_InitStructure.GPIO_Pin = NRF905SE_AM_PIN; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOC, &GPIO_InitStructure); /* NRF905SE_CD_PIN pin configuration PC.02*/ GPIO_InitStructure.GPIO_Pin = NRF905SE_CD_PIN; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOC, &GPIO_InitStructure); /* NRF905SE_PWR_UP_PIN pin configuration PC.03 */ GPIO_InitStructure.GPIO_Pin = NRF905SE_PWR_UP_PIN; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOC, &GPIO_InitStructure);}/********************************************** 函数功能：NRF905SE NVIC配置 入口参数：无 返回： 无 备注： 配置中断线优先级*********************************************/static void NRF905SE_NVIC_Config(void){ NVIC_InitTypeDef NVIC_InitStructure;#ifdef VECT_TAB_RAM /* Set the Vector Table base location at 0x20000000 */ NVIC_SetVectorTable(NVIC_VectTab_RAM, 0x0);#else /* VECT_TAB_FLASH */ /* Set the Vector Table base location at 0x08000000 */ NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0);#endif /* Configure one bit for preemption priority */ NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0); /* Enable the EXTI3 Interrupt */ NVIC_InitStructure.NVIC_IRQChannel = EXTI0_IRQChannel; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStructure);}/**************************************************** 函数功能：NRF905SE 外部中断配置 入口参数：无 返回： 无 备注： 配置中断引脚线、中断模式、高/低使能***************************************************/static void NRF905SE_EXTI_Config(void){ EXTI_InitTypeDef EXTI_InitStructure; GPIO_EXTILineConfig(GPIO_PortSourceGPIOC, GPIO_PinSource0); EXTI_InitStructure.EXTI_Line = EXTI_Line0; EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt; EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising; EXTI_InitStructure.EXTI_LineCmd = ENABLE; EXTI_Init(&EXTI_InitStructure);}/*****************************************************function name: NRF905SE_InitWriteCR;function description: initialize the configer regester of NRF905SE;parameters: none;return: none;author: wzbtime:2011/5/13/pmnotes: the internal function provided for the fuction: void NRF905SE_Configuration(void);***********************************************/void NRF905SE_InitWriteCR(void) {NRF905SE_InitTypeDef * NRF905SE_InitStructurePtr = (NRF905SE_InitTypeDef *) NRF905SE_Config_Buf ;NRF905SE_WriteReg_Bytes(NRF905SE_WC, NRF905SE_InitStructurePtr->NRF905SE_Config_Buf,NRF905SE_InitStructurePtr->NRF905SE_Config_Length);}/******************************************************function name: NRF905SE_Configuraton;function description: initialization of NRF905SE;parameters: none;return: none;author: wzbtime:2011/5/13/pmnotes: none***********************************************/void NRF905SE_Configuration(void) {NRF905SE_GPIO_Config();NRF905SE_NVIC_Config();NRF905SE_EXTI_Config();NRF905SE_InitWriteCR();// initialize the Configer register of NRF905SE /********设置接收地址和发送地址*****/ NRF905SE_SetRxAddress(NRF905SE_RxAddress, NRF905SE_AddressSize); NRF905SE_SetTxAddress(NRF905SE_TxAddress, NRF905SE_AddressSize); NRF905SE_POWER_ON(); NRF905SE_STANDBY();}/*********** set the mode spi/tx/rx ******************************************//******************************************************************************** Function Name : NRF905SE_SetSPIMode* Description : set NRF905SE into SPI mode : means* NRF90RSE Enter to standby mode:* standby mode enable : NRF905SE_TRX_CE = 0.** Input : None.* Output : None.* Return : None.* Note : the change of mode needs some interval time (>=650us).*******************************************************************************/void NRF905SE_SetSPIMode(void) { NRF905SE_POWER_ON();NRF905SE_STANDBY();}/******************************************************************************** Function Name : NRF905SE_SetTxMode* Description : set NRF905SE into Tx mode :*Tx enanble:NRF905SE_TX_EN = 1;* ShockBurst Mode enable:NRF905SE_TRX_CE = 1.** Input : None.* Output : None.* Return : None.* Note : the change of mode needs some interval time (>=650us).*******************************************************************************/void NRF905SE_SetTxMode(void){ NRF905SE_POWER_ON();NRF905SE_MODE_TX();NRF905SE_SHOCKBURST_TRX();//delay_10us(130); /***CE_ON至少持续650us，650us后NRF905SE开始检测空中信息 此时延为转换时研无需额外时延**/}/******************************************************************************** Function Name : NRF905SE_SetRxMode* Description : set NRF905SE into Rx mode :* Rx enable :NRF905SE_TX_EN = 0;* ShockBurst Mode enable: NRF905SE_TRX_CE = 1.** Input : None.* Output : None.* Return : None.* Note : the change of mode needs some interval time (>=650us).*******************************************************************************/void NRF905SE_SetRxMode(void){ NRF905SE_POWER_ON();NRF905SE_MODE_RX();NRF905SE_SHOCKBURST_TRX();//delay_10us(10); /***CE_ON至少持续650us，650us后NRF905SE开始检测空中信息**/}/***********end of set the mode spi/tx/rx ***********************************//*********************Private functions ******************************/static void SPI_SendByte(SPI_TypeDef * SPIx, u8 data) {SPI_I2S_SendData(SPIx, (u16)data);while(SPI_I2S_GetFlagStatus(SPIx, SPI_I2S_FLAG_TXE) == RESET);}static u8 SPI_ReceiveByte(SPI_TypeDef * SPIx) {while(SPI_I2S_GetFlagStatus(SPIx, SPI_I2S_FLAG_RXNE) == RESET);return (u8)SPI_I2S_ReceiveData(SPIx);}/******************************************************************************** Function Name : NRF905SE_Read_u8* Description : internal fuction,it opterates after spi starts.**** Input : None.* Output : valuePtr: u8 * - the pointer of the read value* Return : return the read value.* Note : it is an internal private function: scope only in this file (static).*******************************************************************************/static u8 NRF905SE_Read_u8(u8 * valuePtr) {SPI_SendByte(SPI_USING, NOP);*valuePtr = SPI_ReceiveByte(SPI_USING);return *valuePtr;}/******************************************************************************** Function Name : NRF905SE_Write_u8* Description : internal fuction,it opterates after spi starts.**** Input : None.* Output : valuePtr: u8 * - the pointer of the write value* Return : void.* Note : it is an internal private function: scope only in this file (static)*******************************************************************************/static void NRF905SE_Write_u8(const u8 * valuePtr) {SPI_SendByte(SPI_USING, *valuePtr);SPI_ReceiveByte(SPI_USING);}/********************* end of Private functions ******************************//******** the basical fuctions *************************************************//******************************************************************************** Function Name : NRF905SE_ReadReg_u8* Description : the function read a byte from the register which is decided by op .**** Input : op:- op_r -- to indicate which register to be opterated .* Output : none.* Return : return the read value of the specifical register.* Note : none.*******************************************************************************/u8 NRF905SE_ReadReg_u8(u8 op) {u8 retval;NRF905SE_SetSPIMode();NRF905SE_SPI_START();NRF905SE_Write_u8(&op);NRF905SE_Read_u8(&retval);NRF905SE_SPI_END();return retval;}/******************************************************************************** Function Name : NRF905SE_WriteReg_u8* Description : the function writes a byte to the register which is decided by op .**** Input : op:- op_w -- to indicate which register to be opterated .* value: u8 ---the byte will be written to the resigester.* Output : none.* Return : none.* Note : none.*******************************************************************************/void NRF905SE_WriteReg_u8(u8 op, u8 value) {NRF905SE_SetSPIMode();NRF905SE_SPI_START();NRF905SE_Write_u8(&op);NRF905SE_Write_u8(&value);NRF905SE_SPI_END();}/******************************************************************************** Function Name : NRF905SE_ReadWrite_u8* Description : internal fuction,it opterates after spi starts.**** Input : op: -op_r/op_w (read/write op code);* when op is a op_r, value = NOP, otherwise, value is a write value.* Output : none.* Return : return the read value when op_r , otherwise unvildate data.* Note : expired.*******************************************************************************/u8 NRF905SE_ReadWriteReg_u8(u8 op, u8 value) {u8 retval;NRF905SE_SetSPIMode();NRF905SE_SPI_START();NRF905SE_Write_u8(&op);SPI_SendByte(SPI_USING, value);retval=SPI_ReceiveByte(SPI_USING);NRF905SE_SPI_END();return retval;}/*****************************************************function name: NRF905SE_WriteReg_Byte;function description: this fuction is the same as NRF905SE_WriteReg_u8 as alias ;parameters: op: u8- operation code to indicate the register to operate; value : the value will be written to the specifical regiseter.return: none;author: wzbtime:2011/5/13/pmnotes: reference to the fuction NRF905SE_WriteReg_u8 , also is its alias;****************************************************/static void NRF905SE_WriteReg_Byte(u8 op, u8 value) {NRF905SE_WriteReg_u8(op, value);}/************************************************function name: NRF905SE_ReadReg_Byte .function description: this fuction is the same as NRF905SE_ReadReg_u8 as alias .parameters: op: u8- operation code to indicate the register to operate.return: none.author: wzbtime:2011/5/13/pmnotes: reference to the fuction NRF905SE_ReadReg_u8 , also is its alias.***************************************************/static u8 NRF905SE_ReadReg_Byte(u8 op) {return NRF905SE_ReadReg_u8(op);}/******************************************************************************** Function Name : NRF905SE_ReadReg_Bytes* Description : this fuction can read the register multibyts once.**** Input : op_r:-(read operation code);* arraySize: the number of bytes will be read.* Output : arrayPtr: the pointer of multibytes will be read.* Return : return the poiter of the mutibytes.* Note : none.*******************************************************************************/u8 * NRF905SE_ReadReg_Bytes(u8 op_r, u8* arrayPtr, u8 arraySize) {u8 i;NRF905SE_SetSPIMode();NRF905SE_SPI_START();NRF905SE_Write_u8(&op_r);for(i=0; i<arraySize; i++) {NRF905SE_Read_u8(arrayPtr+i);}NRF905SE_SPI_END();return arrayPtr;}/******************************************************************************** Function Name : NRF905SE_WriteReg_Bytes* Description : this fuction can Write the register multibyts once.**** Input : op_w:-(Write operation code);* arrayPtr: the pointer of multibytes will be written.* arraySize: the number of bytes will be witten.* Output : none.* Return : void.* Note : none.*******************************************************************************/void NRF905SE_WriteReg_Bytes(u8 op_w, const u8* arrayPtr, u8 arraySize) {u8 i;NRF905SE_SetSPIMode();NRF905SE_SPI_START();NRF905SE_Write_u8(&op_w);for(i=0; i<arraySize; i++) {NRF905SE_Write_u8(arrayPtr+i);}NRF905SE_SPI_END();}/*************************end of the basical fuctions ************************//************************* the extend fuctions of NRF905SE *******************//******************************************************************************** Function Name : NRF905SE_IsCRCModeEnable* Description : this fuction can get CRC Mode state: enable /disable.**** Input : none.*** Output : none.* Return : bool:- TRUE/FALSE* Note : none.*******************************************************************************/bool NRF905SE_IsCRCModeEnable(void) {u8 op, mode;op = NRF905SE_RCRC;mode = NRF905SE_ReadReg_u8(op);mode &= 0x40;return mode ? TRUE : FALSE ;}/******************************************************************************** Function Name : NRF905SE_GetCRCMode* Description : this fuction can get the mode of CRC : CRCMode_8bit/CRCMode_16bits.**** Input : none.*** Output : none.* Return : the mode of CRC: CRCMode_8bit/CRCMode_16bits.* Note : none.*******************************************************************************/u8 NRF905SE_GetCRCMode(void) {u8 op, mode;op = NRF905SE_RCRC;mode = NRF905SE_ReadReg_u8(op);mode &= 0x80;return mode >> 7;}/******************************************************************************** Function Name : NRF905SE_SetCRCMode* Description : this fuction can Set the mode of CRC.**** Input : CRC_mode : CRCMode --CRCMode_8bits /CRCMode_16bits.*** Output : none.* Return : none.* Note : none.*******************************************************************************/void NRF905SE_SetCRCMode(CRCMode CRC_mode) {u8 op, mode;op = NRF905SE_RCRC;mode =NRF905SE_ReadReg_u8(op);mode &= 0x7F;mode |= CRC_mode ? 0x80 : 0x00;op = NRF905SE_WCRC;NRF905SE_WriteReg_u8(op, mode);}/******************************************************************************** Function Name : NRF905SE_IsAutoRetranEnable* Description : this fuction can get the mode of auto_retransmit.**** Input : none.*** Output : none.* Return : bool:- TRUE/FALSE* Note : none.*******************************************************************************/bool NRF905SE_IsAutoRetranEnable(void) {u8 op, mode;op = NRF905SE_RAR;mode = NRF905SE_ReadReg_u8(op);mode &= 0x20;return mode ? TRUE : FALSE ;}/******************************************************************************** Function Name : NRF905SE_GetAutoRetranMode* Description : this fuction can get the mode of auto_retransmit.**** Input : none.*** Output : none.* Return : the mode of auto_retransmit.* Note : none.*******************************************************************************/bool NRF905SE_GetAutoRetranMode(void) {u8 op, mode;op = NRF905SE_RAR;mode = NRF905SE_ReadReg_u8(op);mode &= 0x20;return mode ? TRUE : FALSE ;}/******************************************************************************** Function Name : NRF905SE_SetAutoRetran_Mode* Description : this fuction can Set the mode of auto_retransmit.**** Input : auto_retran_en : bool --TRUE/FALSE.*** Output : none.* Return : none.* Note : none.*******************************************************************************/void NRF905SE_SetAutoRetranMode(bool auto_retran_en) {u8 op, mode;op = NRF905SE_WAR;mode =NRF905SE_ReadReg_u8(NRF905SE_RAR);mode &= 0xDF;mode |= auto_retran_en ? 0x20 : 0x00;NRF905SE_WriteReg_u8(op, mode);}/******************************************************************************** Function Name : NRF905SE_GetRxAddressSize* Description : this fuction can get the size of RxAddress in configer register.**** Input : none.*** Output : none.* Return : the size of RxAddress.* Note : none.*******************************************************************************/u8 NRF905SE_GetRxAddressSize(void) {u8 op, size;op = NRF905SE_RTRX_AFW;size = NRF905SE_ReadReg_u8(op);size &= 0x07;return size;}/******************************************************************************** Function Name : NRF905SE_SetRxAddressSize* Description : this fuction can set the size of RxAddress in configer register.**** Input : size : u8 --- available values: 1-4 .*** Output : none.* Return : the size of RxAddress.* Note : none.*******************************************************************************/void NRF905SE_SetRxAddressSize(u8 size) {u8 op, i;op = NRF905SE_RTRX_AFW;//i = NRF905SE_GetRxAddressSize();i = NRF905SE_ReadReg_u8(op);i &= 0xF8;size &= 0x07;size |= i;op = NRF905SE_WTRX_AFW;NRF905SE_WriteReg_u8(op, size);}/******************************************************************************** Function Name : NRF905SE_GetTxAddressSize* Description : this fuction can get the size of RxAddress in configer register.**** Input : none.*** Output : none.* Return : the size of TxAddress.* Note : none.*******************************************************************************/u8 NRF905SE_GetTxAddressSize(void) {u8 op, size;op = NRF905SE_RTRX_AFW;size = NRF905SE_ReadReg_u8(op);size &= 0x70;return size >> 4;}/******************************************************************************** Function Name : NRF905SE_SetTxAddressSize* Description : this fuction can set the size of TxAddress in configer register.**** Input : size: u8--- the size of Tx-Address register to be set, available values: 0-4 .*** Output : none.* Return : the size of TxAddress.* Note : none.*******************************************************************************/void NRF905SE_SetTxAddressSize(u8 size) {u8 op, i;op = NRF905SE_RTRX_AFW;//i = NRF905SE_GetTxAddressSize();i = NRF905SE_ReadReg_u8(op);i &= 0x8F;size &= 0x07;size = size << 4;size |= i;op = NRF905SE_WTRX_AFW;NRF905SE_WriteReg_u8(op, size);}/******************************************************************************** Function Name : NRF905SE_GetRxPayloadSize* Description : this fuction can get the size of payload in Rx-Paylaod register.**** Input : none.*** Output : none.* Return : the size of payload in Rx-Payload.* Note : none.*******************************************************************************/u8 NRF905SE_GetRxPayloadSize(void) {u8 op, size;op = NRF905SE_RRX_PW ;size = NRF905SE_ReadReg_u8(op);size &= 0x3f;return size;}/******************************************************************************** Function Name : NRF905SE_SetRxPayloadSize* Description : this fuction can set the size of payload in Rx-Paylaod register.**** Input : size: u8 --- the size of Rx-Payload register to be set; available values: 0-32.*** Output : none* Return : the size of payload in Rx-Payload register.* Note : none.*******************************************************************************/void NRF905SE_SetRxPayloadSize(u8 size) {u8 i, op;op = NRF905SE_RRX_PW ;i = NRF905SE_ReadReg_u8(op);i &= 0xc0;size &= 0x3f;size |= i;op = NRF905SE_WRX_PW ;NRF905SE_ReadWriteReg_u8(op, size);}/******************************************************************************** Function Name : NRF905SE_GetTxPayloadSize* Description : this fuction can get the size of payload in TxPaylaod register.**** Input :none.*** Output : none.* Return : the size of payload.* Note : none.*******************************************************************************/u8 NRF905SE_GetTxPayloadSize(void) {u8 op, size;op = NRF905SE_RTX_PW ;size = NRF905SE_ReadReg_u8(op);size &= 0x3f;return size;}/******************************************************************************** Function Name : NRF905SE_SetTxPayloadSize* Description : this fuction can set the size of payload in Tx-Paylaod register.**** Input : size: u8 --- the size of Tx-Payload register to be set; available values: 0-32.*** Output : none.* Return : the size of payload in Tx-Payload register.* Note : none.*******************************************************************************/void NRF905SE_SetTxPayloadSize(u8 size) {u8 i, op;op = NRF905SE_RTX_PW ;i = NRF905SE_ReadReg_u8(op);i &= 0xc0;size &= 0x3f;size |= i;op = NRF905SE_WTX_PW ;NRF905SE_ReadWriteReg_u8(op, size);}/*****************************************************function name: NRF905SE_Get_TxRxPayload ;function description: get Payload in Tx-Payload/Rx-Payload register of NRF905SE;parameters: @1-- op_r: u8 --) indicate which register (tx-payload or rx-payload ) to be operated. @2-- payload_array : u8 * : the array which will contain the payload . @3-- payload_length : u8 --- will be indicated by tx-payload or rx-payload size;return: u8 *;author: wzbtime:2011/5/13/pmnotes: none;***********************************************/static u8 * NRF905SE_GetTxRxPayload(u8 op_r, u8 * payload_array, u8 payload_array_length){ NRF905SE_ReadReg_Bytes(op_r, payload_array, payload_array_length);return payload_array;}/*****************************************************function name: NRF905SE_SetTxRxPayload ;function description: Set Payload in Tx-Payload/Rx-Payload register of NRF905SE;parameters: @1-- op_W: u8 --) indicate which register (Tx-payload or Rx-payload ) to be operated. @2-- payload_array : u8 * : the array which will contain the payload . @3-- payload_length : u8 --- will be indicated by tx-payload or rx-payload size;return: none;author: wzbtime:2011/5/13/pmnotes: none;***********************************************/static void NRF905SE_SetTxRxPayload(u8 op_w, const u8 * payload_array, u8 payload_array_length){ NRF905SE_WriteReg_Bytes(op_w, payload_array, payload_array_length);}/*****************************************************function name: NRF905SE_GetTxPayload ;function description: get Payload in Tx-Payload register of NRF905SE;parameters: @1-- payload_array : u8 * : the array which will contain the payload . @2-- payload_length : u8 --- will be indicated by tx-payload size;return: u8 *;author: wzbtime:2011/5/13/pmnotes: none;***********************************************/u8 * NRF905SE_GetTxPayload(u8 * payload_array, u8 payload_array_length){ NRF905SE_GetTxRxPayload(NRF905SE_RTP, payload_array, payload_array_length);return payload_array;}/*****************************************************function name: NRF905SE_SetTxPayload ;function description: set payload in Tx-Payload register of NRF905SE;parameters: @1-- addr_array : u8 * : the array which contains the payload. @2-- payload_length : u8 --- will be indicated by Tx-payload size.return: u8 *;author: wzbtime:2011/5/13/pmnotes: none.***********************************************/void NRF905SE_SetTxPayload(const u8 * addr_array, u8 addr_array_length){ NRF905SE_SetTxRxPayload(NRF905SE_WTP, addr_array, addr_array_length);}/*****************************************************function name: NRF905SE_GetRxPayload ;function description: get Payload in Rx-Payload register of NRF905SE;parameters: @1-- payload_array : u8 * : the array which will contain the payload . @2-- payload_length : u8 --- will be indicated by tx-payload size;return: u8 *;author: wzbtime:2011/5/13/pmnotes: none;***********************************************/u8 * NRF905SE_GetRxPayload(u8 * payload_array, u8 payload_array_length){ NRF905SE_GetTxRxPayload(NRF905SE_RRP, payload_array, payload_array_length);return payload_array;}/*****************************************************function name: NRF905SE_Set_RxPayload ;function description: set payload in Rx-Payload register of NRF905SE;parameters: @1-- addr_array : u8 * : the array which contains the payload. @2-- payload_length : u8 --- will be indicated by Rx-payload size.return: none;author: wzbtime:2011/5/13/pmnotes: if the Rx-Payload register is read-only, this function will be dropped! But now the instruction NRF905SE_WRP NOT DEFINED!***********************************************/void NRF905SE_SetRxPayload(const u8 * addr_array, u8 addr_array_length){ //NRF905SE_Set_TxRxPayload(NRF905SE_WRP=0x25, addr_array, addr_array_length);}/************* the generous address register operation functions **************//*****************************************************function name: NRF905SE_GetTxRxAddress ;function description: get Address in tx-address/rx-address register of NRF905SE;parameters: @1-- op_r : u8 * --- the operation code of tx-address or rx-address register. @2-- addr_array : u8 * : the array which contains the address. @3-- addr_array_length : u8;return: u8 *;author: wzbtime:2011/5/13/pmnotes: none;***********************************************/u8 * NRF905SE_GetTxRxAddress(u8 op_r, u8* addr_array, u8 addr_array_length){ NRF905SE_ReadReg_Bytes(op_r, addr_array, addr_array_length);return addr_array;}/*****************************************************function name: NRF905SE_SetTxRxAddress ;function description: set Address in tx-address/rx-addess register of NRF905SE;parameters: @1-- op_w : u8 * --- the operation code of tx-address or rx-address register. @2-- addr_array : u8 * : the array which contains the address. @3-- addr_array_length : u8;return: u8 *;author: wzbtime:2011/5/13/pmnotes: none;***********************************************/void NRF905SE_SetTxRxAddress(u8 op_w, const u8 * addr_array, u8 addr_array_length){ NRF905SE_WriteReg_Bytes(op_w, addr_array, addr_array_length);}/*****************************************************function name: NRF905SE_SetTxAddress ;function description: set Address in tx-address register of NRF905SE;parameters: @1-- addr_array : u8 * : the array which contains the address. @2-- addr_array_length : u8;return: u8 *;author: wzbtime:2011/5/13/pmnotes: none;***********************************************/void NRF905SE_SetTxAddress( const u8 * addr_array, u8 addr_array_length){ NRF905SE_SetTxRxAddress(NRF905SE_WTA, addr_array, addr_array_length);}/*****************************************************function name: NRF905SE_GetTxAddress ;function description: get Address in tx-address register of NRF905SE;parameters: @1-- addr_array : u8 * : the array which contains the address. @2-- addr_array_length : u8;return: u8 *;author: wzbtime:2011/5/13/pmnotes: none;***********************************************/u8 * NRF905SE_GetTxAddress(u8 * addr_array, u8 addr_array_length){ NRF905SE_GetTxRxAddress(NRF905SE_RTA, addr_array, addr_array_length);return addr_array;}/*****************************************************function name: NRF905SE_SetRxAddress ;function description: set Address in Rx-address register of NRF905SE;parameters: @1-- addr_array : u8 * : the array which contains the address. @2-- addr_array_length : u8;return: u8 *;author: wzbtime:2011/5/13/pmnotes: none;***********************************************/void NRF905SE_SetRxAddress(const u8 * addr_array, u8 addr_array_length){ NRF905SE_SetTxRxAddress(NRF905SE_WRA, addr_array, addr_array_length);}/*****************************************************function name: NRF905SE_GetRxAddress ;function description: get Address in Rx-address register of NRF905SE;parameters: @1-- addr_array : u8 * : the array which contains the address. @2-- addr_array_length : u8;return: u8 *;author: wzbtime:2011/5/13/pmnotes: none;***********************************************/u8 * NRF905SE_GetRxAddress(u8 * addr_array, u8 addr_array_length){ NRF905SE_GetTxRxAddress(NRF905SE_RRA, addr_array, addr_array_length);return addr_array;}/******************************************************************************** Function Name : NRF905SE_SendData* Description : this functions descripts the process of NRF905SE send data.*** Input : None.* Output : None.* Return : None.* Note : This function will block until data send process finished,*implemented by the while recycle with the flag variable.*******************************************************************************/void NRF905SE_SendData(void) {// set the tx modeNRF905SE_SetTxMode();// wait for send finishedwhile(!( NRF905SE_Is_Data_TxFinished())) ;// reset the flagNRF905SE_Reset_Data_TxFinished_Flag();//set NRF905SE to the standby modeNRF905SE_STANDBY();}/******************************************************************************** Function Name : NRF905SE_ReceiveData* Description : this functions descripts the process of NRF905SE receive data.*** Input : None.* Output : None.* Return : None.* Note : This function will block until data receive process finished,*implemented by the while recycle with the flag variable.*******************************************************************************/void NRF905SE_ReceiveData(void) {//set rx modeNRF905SE_SetRxMode();//wait for recieve finishedwhile(! ( NRF905SE_Is_Data_RxFinished() ) );//reset the flagNRF905SE_Reset_Data_RxFinished_Flag();//set NRF905SE to the standby modeNRF905SE_STANDBY();}/******************************packet send /receive **********//******************************************************************************** Function Name : NRF905SE_SendTxPacket* Description : this functions descripts the process of NRF905SE send data, and you can set the payloadand destination address through payload_array and tx_address_array;*** Input : payload_size: -- u8 ,. tx_address_length -- u8;* Output : payload_array: set the data in the Tx_payload register; tx_address_array -- the destination address to send * Return : None.* Note : This function will block until data send process finished,*implemented by the while recycle with the flag variable.*******************************************************************************/bool NRF905SE_SendTxPacket(const u8 * payload_array, u8 payload_size, const u8 * tx_address_array, u8 tx_address_length) {// prepare the data to be sent means set the payload to be sentNRF905SE_SetTxPayload(payload_array, payload_size);// set tx-addressNRF905SE_SetTxAddress(tx_address_array, tx_address_length);// send dataNRF905SE_SendData();return TRUE;}/******************************************************************************** Function Name : NRF905SE_SendTxPacket* Description : this functions descripts the process of NRF905SE receive data, and you can get the payloadthrough payload_array to the default Tx_address;*** Input : payload_size: -- u8 ,.* Output : payload_array: set the data in the Tx_payload register;* Return : None.* Note : This function will block until data send process finished,*implemented by the while recycle with the flag variable.*******************************************************************************/bool NRF905SE_SendPacket(const u8 * payload_array, u8 payload_size) {// prepare the data to be sent means set the payload to be sentNRF905SE_SetTxPayload(payload_array, payload_size);// set tx-address default//NRF905SE_SetTxAddress(NRF905SE_TxAddress,NRF905SE_AddressSize);// send dataNRF905SE_SendData();return TRUE;}/******************************************************************************** Function Name : NRF905SE_ReceivePacket* Description : this functions descripts the process of NRF905SE receive data, and you can get the payloadthrough payload_array;*** Input : payload_size: -- u8 ,.* Output : payload_array: the data in the Rx_payload register;* Return : None.* Note : This function will block until data receive process finished,*implemented by the while recycle with the flag variable.*******************************************************************************/u8 * NRF905SE_ReceivePacket(u8 * payload_array, u8 payload_size) {// start receive dataNRF905SE_ReceiveData();// receive data finishedNRF905SE_GetRxPayload(payload_array, payload_size);return payload_array;}/*** interrupt process ****/void NRF905SE_EXTI_DoIt() {NRF905SE_DR_FLAG = 1; EXTI_ClearITPendingBit(EXTI_Line0);}
3. 后记：本程序中部分GPIO口的配置，外部中断的配置于相应的硬件相关，需要根据具体的板子进行重新配置！
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