Nodemcu上使用Mongoose OS的坑（1）

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下载了微软的Code做编辑环境，其实可以用Visual Studio（官方例子就是VS项目文件）。

{    // See https://go.microsoft.com/fwlink/?LinkId=733558    // for the documentation about the tasks.json format    "version": "2.0.0",    "tasks": [        {            "taskName": "Mongoose build",            "type": "shell",            "command": "mos",            "args": ["build --arch esp8266"],            "problemMatcher": {                "owner": "c",                "fileLocation": ["relative", "${workspaceRoot}"],                "pattern": {                    "regexp": "^(.*):(\\d+):(\\d+):\\s+(warning|error):\\s+(.*)$",                    "file": 1,                    "line": 2,                    "column": 3,                    "severity": 4,                    "message": 5                }              }        }    ]}

tasks.json内容如上。

第一个坑：include路径。

{            "name": "Win32",            "includePath": [                "${workspaceRoot}",                "${workspaceRoot}/src",                "${workspaceRoot}/build/gen",                "D:/mongoose-os-1.5",                "D:/mongoose-os-1.5/frozen",                "D:/mongoose-os-1.5/fw/src",                "D:/mongoose-os-1.5/fw/common",                "C:/Program Files (x86)/CodeBlocks/MinGW/lib/gcc/mingw32/4.9.2/include",                "C:/Users/y/.mos/libs-1.14/http-server-1.14/src",                "C:/Program Files (x86)/CodeBlocks/MinGW/include",                "C:/Users/y/.mos/libs-1.14"            ],            "defines": [                "_DEBUG",                "UNICODE"            ],            "intelliSenseMode": "msvc-x64",            "browse": {                "path": [                    "${workspaceRoot}",                    "${workspaceRoot}/src",                    "${workspaceRoot}/build/gen",                    "D:/mongoose-os-1.5",                    "D:/mongoose-os-1.5/frozen",                    "D:/mongoose-os-1.5/fw/src",                    "D:/mongoose-os-1.5/fw/common",                    "C:/Program Files (x86)/CodeBlocks/MinGW/lib/gcc/mingw32/4.9.2/include",                    "C:/Users/y/.mos/libs-1.14/http-server-1.14/src",                    "C:/Program Files (x86)/CodeBlocks/MinGW/include",                    "C:/Users/y/.mos/libs-1.14"                ],                "limitSymbolsToIncludedHeaders": true,                "databaseFilename": ""            }        }

是在win7下使用，所以只修改win32这部分。注意workspaceRoot是项目文件夹的Root。

路径不全，则编译时会提示未定义的引用。在IDE中也会有波浪下划线，点击#include...，左侧有图标小灯可跳。

正确包含文件后，颜色、样式如下：

第2个坑，针脚映射。

注意，MGS是for esp8266等，不是for nodemcu。所以在函数里访问GPIO的Pin，不能按照Nodemcu板子上的D0, D1针脚来用。

如D0是用户指示灯，让它闪烁时，函数mgos_gpio_toggle(16)，显然要使用GPIO16 。

Pin号用错了，结果是程序不执行，也不报错（编译可以通过）。

一个完整的main.c如下：

#include "mgos_timers.h"#include "mgos.h"#include "common/cs_dbg.h"#include "common/platform.h"#include "frozen/frozen.h"#include "mgos_app.h"#include "mgos_mongoose.h"#include "mgos_uart.h"#include "mgos_gpio.h"#include "mgos_mongoose.h"#include "sht1x_v3.h"#define UART_NO 0#define led_0 16#define btn_set 4#define btn_reset 5//const struct sys_config_wifi_sta *ap;char mode_temp = 0x3;char mode_hum = 0x5;char info[50];SHT1x_V3 shtx_v3 = {0, 0, 0.0, 0.0, 0x3, 0, 0};//ip请求处理static void ip_handler(struct mg_connection *c, int ev, void *p, void *user_data){  if (ev == MG_EV_HTTP_REPLY)  {    struct http_message *hm = (struct http_message *)p;    if (hm->resp_code == 200)    {      int c = json_scanf(hm->message.p, hm->message.len, "ip:%Q", &info);      if (c > 0)      {        //mgos_uart_printf(UART_NO, info);        printf("get ip:%s", info);      }    }    else    {      //mgos_uart_printf(UART_NO, "connect failed\n");      printf("connect failed");    }  }  (void)user_data;  (void)c;}//ip 定时器static void cb_ddns_timer(void){  const char *url = "http://ip.chinaz.com/getip.aspx";  mgos_connect_http(url, ip_handler, NULL);  //(void)arg;}//按键static void cb_btnset(int pin, void *arg){  //printf("button set \n");  printf("button set \n");  (void)pin;  (void)arg;}static void cb_btnreset(int pin, void *arg){  //printf("button reset \n");  printf("button reset \n");  (void)pin;  (void)arg;}//心跳信号static void cb_led_heartbeat(void *arg){  mgos_gpio_toggle(led_0);  printf("I am here,...\n");  (void)arg;}//读传感器static void cb_read_sht1x(void *arg){  measure(&shtx_v3, *(char *)arg);  //(void)arg;}/* main entry */enum mgos_app_init_result mgos_app_init(void){  //timers init  int result = mgos_timers_init();  printf("timer init:%d", result);  mgos_uptime_init();  //定时取外网IP  //mgos_set_timer(20000, true, cb_ddns_timer, NULL);  cb_ddns_timer();  //更新ddns  //注册按键  mgos_gpio_set_button_handler(btn_set, MGOS_GPIO_PULL_UP, MGOS_GPIO_INT_EDGE_POS, 100, cb_btnset, NULL);  mgos_gpio_set_button_handler(btn_reset, MGOS_GPIO_PULL_UP, MGOS_GPIO_INT_EDGE_POS, 100, cb_btnreset, NULL);  //heartbeat  mgos_gpio_set_mode(led_0, MGOS_GPIO_MODE_OUTPUT);  mgos_set_timer(2000, true, cb_led_heartbeat, NULL);  //读取温湿度  connectionreset();  int id = mgos_set_timer(15 * 1000, true, cb_read_sht1x, &mode_temp);  printf("read temp timer id:%d", id);  mgos_set_timer(10 * 1000, true, cb_read_sht1x, &mode_hum);  // 发送  return MGOS_APP_INIT_SUCCESS;}

对于回调函数里的void*参数，参见前一篇的翻译：C的void指针。

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