139 lines
4.0 KiB
C
139 lines
4.0 KiB
C
/******************************************************************************
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* @file drv_eg25gminipice.c
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* @brief drv_eg25gminipice.c drivers
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* @version V1.0
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* @author Gary
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* @copyright
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******************************************************************************/
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#include "drv_eg25gminipice.h"
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#define UART2_BAUDRATE 115200
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#define MAX_RETRY 3
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//4G实例化
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static uint8_t sim_rec_buf[MAX_RECV_LEN] = {0};
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LTE4G_STATIC_INIT(sim_item, 1, 0, 0, 1024,sim_rec_buf);
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void drv_sim_push_data(Lte4GItem* item, uint8_t *buf, uint16_t len)
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{
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uint16_t i = 0;
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if((item != NULL) && (item->buf_pos + len < item->buf_size))
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{
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for (i = 0; i < len; i++)
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{
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item->buf[item->buf_pos++] = buf[i];
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}
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}
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}
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void drv_uart2_Init(void)
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{
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RCC->APB1ENR |= RCC_APB1ENR_USART2EN; // 使能 USART2 时钟
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RCC->AHB1ENR |= RCC_AHB1ENR_GPIOAEN; // 使能 GPIOA 时钟
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GPIOA->MODER |= (2 << (2 * 2)) | (2 << (3 * 2)); // PA2(TX), PA3(RX) 复用模式
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GPIOA->AFR[0] |= (7 << (2 * 4)) | (7 << (3 * 4)); // 复用 AF7 (USART2)
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USART2->BRR = SystemCoreClock / UART2_BAUDRATE;
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USART2->CR1 = USART_CR1_TE | USART_CR1_RE | USART_CR1_UE; // 使能串口、发送和接收
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}
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void drv_uart2_sendbyte(char c)
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{
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while (!(USART2->SR & USART_SR_TXE)); // 等待发送完成
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USART2->DR = c;
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}
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void drv_uart2_sendString(const char *str)
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{
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while (*str) {
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drv_uart2_sendbyte(*str++);
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}
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}
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void drv_send_at_cmd(const char *cmd, int delay_ms)
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{
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drv_uart2_sendString(cmd);
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drv_uart2_sendString("\r\n"); // AT 指令以 "\r\n" 结尾
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kit_time_dly_ms(30);
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}
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void drv_eg25g_init(void)
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{
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drv_send_at_cmd("AT", 500); // 1. 测试 AT 指令
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drv_send_at_cmd("AT+CPIN?", 500); // 2. 查询 SIM 卡状态
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drv_send_at_cmd("AT+COPS=0", 500); // 3. 让模块自动选择运营商
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drv_send_at_cmd("AT+CEREG?", 1000); // 4. 查询 4G 注册状态
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// drv_send_at_cmd("AT+CGDCONT=1,\"IP\",\"your_apn\"", 500); // 5. 设置 APN 如果支持自动识别则不需要设置apn
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drv_send_at_cmd("AT+CGACT=1,1", 1000); // 6. 激活 PDP（获取 IP）
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drv_send_at_cmd("AT+CGPADDR=1", 500); // 7. 查询分配的 IP 地址
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}
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// 发送 AT 指令并等待返回值,可用于此优化初始化函数
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int drv_send_at_cmd2(const char *cmd, int delay_ms)
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{
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for (int i = 0; i < MAX_RETRY; i++) // 失败最多重试 MAX_RETRY 次
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{
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drv_uart2_sendString(cmd);
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drv_uart2_sendString("\r\n"); // AT 指令以 "\r\n" 结尾
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kit_time_dly_ms(30);
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if (sim_item.buf_pos > 0 && strstr((const char*)sim_item.buf, "OK")) // 解析返回值
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{
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sim_item.buf_pos = 0;
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memset(sim_item.buf,0x00,MAX_RECV_LEN);
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return 1; // 成功
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}
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}
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return 0; // 失败
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}
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void drv_eg25g_init2(void)
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{
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if (!drv_send_at_cmd2("AT", 500)) return; // 1. 测试 AT 指令
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if (!drv_send_at_cmd2("AT+CPIN?", 500)) return; // 2. 查询 SIM 卡状态
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if (!drv_send_at_cmd2("AT+COPS=0", 500)) return; // 3. 让模块自动选择运营商
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if (!drv_send_at_cmd2("AT+CEREG?", 1000)) return; // 4. 查询 4G 注册状态
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if (!drv_send_at_cmd2("AT+CGDCONT=1,\"IP\",\"your_apn\"", 500)) return; // 5. 设置 APN
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if (!drv_send_at_cmd2("AT+CGACT=1,1", 1000)) return; // 6. 激活 PDP（获取 IP）
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if (!drv_send_at_cmd2("AT+CGPADDR=1", 500)) return; // 7. 查询分配的 IP 地址
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}
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void drv_mqtt_connect(void)
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{
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drv_send_at_cmd("AT+QMTCFG=\"recv/mode\",0,0,1", 500);
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drv_send_at_cmd("AT+QMTOPEN=0,\"mqtt.example.com\",1883", 5000);
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drv_send_at_cmd("AT+QMTCONN=0,\"client_id\",\"username\",\"password\"", 5000);
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}
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void drv_mqtt_publish(const char *topic, const char *message)
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{
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char cmd[128];
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sprintf(cmd, "AT+QMTPUB=0,0,0,0,\"%s\",\"%s\"", topic, message);
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drv_send_at_cmd(cmd, 500);
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}
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/*
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int main(void) {
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SystemInit();
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drv_uart2_Init();
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drv_eg25g_init();
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drv_mqtt_connect();
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while (1)
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{
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drv_mqtt_publish("sensor/data", "{\"temperature\":25.3}");
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for (volatile int i = 0; i < 10000000; i++); // 发送间隔
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}
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}
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*/
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