225 lines
8.3 KiB
C
225 lines
8.3 KiB
C
#include "24c02.h"
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#include "iic.h"
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#include <string.h>
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#include <stdio.h>
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/* MQTT 配置参数 — 首次上电自动写入 EEPROM
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* 所有默认值来自 main.h 的 MQTT_xxx 宏，保证全局唯一配置源
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*/
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MqttInfo_Str MqttInfoStr = {
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.ClientID = MQTT_CLIENT_ID,
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.Username = MQTT_USERNAME,
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.Passward = MQTT_PASSWORD,
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.ServerIP = MQTT_SERVER_IP,
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.Topic = MQTT_TOPIC,
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.ServerPort = MQTT_SERVER_PORT,
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.Relay_State = {0},
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.Magic = 0, /* 首次上电由 eepromReadInfo() 写入 EEPROM_MAGIC */
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};
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/*-------------------------------------------------*/
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/*读取AT24C02指定地址的一个字节数据 */
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/*输入参数:ReadAddr:需要读取数据的地址 */
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/*返回值：读取到的数据 */
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/*-------------------------------------------------*/
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uint8_t m24c02ReadOneByte(uint8_t ReadAddr) {
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uint8_t receive;
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uint8_t err = 0;
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iicStart();
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err |= iicSendByteAck(M24C02_WADDR);
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err |= iicSendByteAck(ReadAddr);
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iicStart();
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err |= iicSendByteAck(M24C02_RADDR);
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if (err) {
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iicStop();
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log_warn("> EE read init err=0x%02X", err);
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return 0xFF;
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}
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receive=iicReadByte(0);
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iicStop();
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HAL_Delay(5);
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return receive;
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}
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/*-------------------------------------------------*/
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/*函数名：向指定地址写入一个数据 */
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/*输入参数:WriteAddr :写入数据的目的地址 */
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/*输入参数:DataToWrite:要写入的数据 */
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/*返回值：0=成功, 1=无ACK(设备未响应) */
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/*-------------------------------------------------*/
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uint8_t m24c02WriteOneByte(uint8_t WriteAddr,uint8_t DataToWrite) {
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uint8_t ack_err = 0;
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uint8_t retry = 3;
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while (retry--) {
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ack_err = 0;
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iicStart();
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ack_err |= iicSendByteAck(M24C02_WADDR);
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ack_err |= iicSendByteAck(WriteAddr);
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ack_err |= iicSendByteAck(DataToWrite);
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iicStop();
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HAL_Delay(10);
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if (ack_err == 0) break;
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log_warn("> EE write err @%u, retry=%u", WriteAddr, retry);
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HAL_Delay(5);
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}
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return ack_err;
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}
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/*-------------------------------------------------*/
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/*函数名：从指定的地址读取指定长度的数据 */
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/*输入参数:ReadAddr:需要读取数据的地址 */
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/*输入参数:Redata:保存数据的缓冲区 */
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/*输入参数:Redatalen:读取数据的长度 */
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/*返回值：0=成功, 1=设备无ACK */
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/*-------------------------------------------------*/
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uint8_t m24c02ReadSequential(uint8_t ReadAddr,uint8_t *Redata,uint16_t Redatalen) {
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uint16_t i;
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uint8_t ack_err = 0;
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iicStart();
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ack_err |= iicSendByteAck(M24C02_WADDR);
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ack_err |= iicSendByteAck(ReadAddr);
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iicStart();
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ack_err |= iicSendByteAck(M24C02_RADDR);
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for(i=0; i<(Redatalen-1); i++) {
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Redata[i]=iicReadByte(1);
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}
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Redata[Redatalen-1]=iicReadByte(0);
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iicStop();
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HAL_Delay(5);
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return ack_err;
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}
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/*-------------------------------------------------*/
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/*函数名：从EEprom指定的地址读取数据 */
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/*输入参数:addr:需要读取数据的地址 */
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/*输入参数:data:读取数据缓冲区 */
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/*输入参数:len:要读取的数据长度 */
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/*返回值：0=成功, 1=设备无ACK */
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/*-------------------------------------------------*/
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uint8_t eepromReadData(uint8_t addr,void *data, uint16_t len) {
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uint8_t *ptr;
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ptr = data;
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return m24c02ReadSequential(addr,ptr,len);
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}
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/*-------------------------------------------------*/
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/*函数名：向 24C02 写入同一页内的若干字节 */
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/*输入参数:WriteAddr:起始地址 */
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/* data :数据缓冲区 */
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/* len :长度(不得跨页, 页大小 8 字节) */
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/*返回值：0=成功, 1=无ACK(设备未响应) */
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/*-------------------------------------------------*/
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#define M24C02_PAGE_SIZE 8u
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static uint8_t m24c02WritePage(uint8_t WriteAddr, const uint8_t *data, uint8_t len) {
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uint8_t ack_err = 0;
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uint8_t retry = 3;
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uint8_t i;
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while (retry--) {
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ack_err = 0;
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iicStart();
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ack_err |= iicSendByteAck(M24C02_WADDR);
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ack_err |= iicSendByteAck(WriteAddr);
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for (i = 0; i < len && ack_err == 0; i++) {
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ack_err |= iicSendByteAck(data[i]);
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}
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iicStop();
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HAL_Delay(10);
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if (ack_err == 0) break;
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log_warn("> EE page write err @%u, retry=%u", WriteAddr, retry);
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HAL_Delay(5);
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}
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return ack_err;
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}
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/*-------------------------------------------------*/
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/*函数名：EEprom指定地址写入指定字节的数据 */
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/* 按页边界切分, 页写入, 每页一个写周期 */
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/*输入参数:addr：地址 */
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/*输入参数:data：写入的数据 */
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/*输入参数:len：写入数据的长度 */
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/*返回值：0=成功, 1=有页写入失败 */
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/*-------------------------------------------------*/
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uint8_t eepromWriteData(uint8_t addr, void *data, uint16_t len) {
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uint8_t *ptr = data;
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uint8_t err = 0;
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while (len > 0) {
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/* 当前地址到页边界的距离, 避免跨页回卷 */
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uint8_t chunk = M24C02_PAGE_SIZE - (addr % M24C02_PAGE_SIZE);
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if (chunk > len) chunk = (uint8_t)len;
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uint8_t e = m24c02WritePage(addr, ptr, chunk);
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if (e) {
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log_warn("> EE write fail @%u, err=0x%02X", addr, e);
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}
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err |= e;
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addr += chunk;
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ptr += chunk;
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len -= chunk;
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}
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if (err) {
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log_warn("> EEPROM write total ACK err=0x%02X", err);
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} else {
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log_info("> EEPROM write OK");
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}
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return err;
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}
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/*函数名：从EEprom读取或验证MQTT配置信息 */
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/*输入参数：无 */
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/*返回值：无 */
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/*-------------------------------------------------*/
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void eepromReadInfo(void) {
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MqttInfo_Str tmp_read;
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uint8_t read_err;
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/* 先做一次单字节读写探测，确认IIC基本通信正常 */
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uint8_t probe_wr = 0xA5;
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m24c02WriteOneByte(250, probe_wr);
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uint8_t probe_rd = m24c02ReadOneByte(250);
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log_info("> EEPROM probe: wr=0x%02X, rd=0x%02X", probe_wr, probe_rd);
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/* 从EEPROM读取配置 */
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memset(&MqttInfoStr, 0, MQTT_STRUCT_LEN);
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read_err = eepromReadData(0, &MqttInfoStr, MQTT_STRUCT_LEN);
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log_info("> EEPROM read err=%d, Magic=0x%08X, Ver=%u",
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read_err, MqttInfoStr.Magic, MqttInfoStr.Ver);
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/* MQTT字段与编译时常量比对 (Ver由OTA管理, 不参与校验) */
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if (MqttInfoStr.Magic == EEPROM_MAGIC &&
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strcmp(MqttInfoStr.ClientID, MQTT_CLIENT_ID) == 0 &&
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strcmp(MqttInfoStr.Username, MQTT_USERNAME) == 0 &&
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strcmp(MqttInfoStr.Passward, MQTT_PASSWORD) == 0 &&
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strcmp(MqttInfoStr.ServerIP, MQTT_SERVER_IP) == 0 &&
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strcmp(MqttInfoStr.Topic, MQTT_TOPIC) == 0 &&
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MqttInfoStr.ServerPort == MQTT_SERVER_PORT) {
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log_info("EEPROM config valid, Ver=%u", MqttInfoStr.Ver);
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} else {
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/* 配置损坏/变更/未初始化 */
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uint16_t savedVer = MqttInfoStr.Ver;
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int magic_ok = (MqttInfoStr.Magic == EEPROM_MAGIC);
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memset(&MqttInfoStr, 0, MQTT_STRUCT_LEN);
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strcpy(MqttInfoStr.ClientID, MQTT_CLIENT_ID);
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strcpy(MqttInfoStr.Username, MQTT_USERNAME);
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strcpy(MqttInfoStr.Passward, MQTT_PASSWORD);
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strcpy(MqttInfoStr.ServerIP, MQTT_SERVER_IP);
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strcpy(MqttInfoStr.Topic, MQTT_TOPIC);
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MqttInfoStr.ServerPort = MQTT_SERVER_PORT;
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/* 魔数匹配→保留EEPROM版本号; 魔数不匹配→归0(新板/重置) */
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MqttInfoStr.Ver = magic_ok ? savedVer : 0;
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/* 新板/配置重置时，继电器默认全关(0)，不保留空白EEPROM的0xFF */
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memset(MqttInfoStr.Relay_State, 0, sizeof(MqttInfoStr.Relay_State));
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MqttInfoStr.Magic = EEPROM_MAGIC;
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eepromWriteData(0, &MqttInfoStr, MQTT_STRUCT_LEN);
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log_info("> EEPROM write done, Magic=0x%08X", MqttInfoStr.Magic);
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/* 立即回读验证 */
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memset(&tmp_read, 0, MQTT_STRUCT_LEN);
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read_err = eepromReadData(0, &tmp_read, MQTT_STRUCT_LEN);
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log_info("> EEPROM verify err=%d, Magic=0x%08X, Ver=%u",
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read_err, tmp_read.Magic, tmp_read.Ver);
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log_info("EEPROM repaired, Ver=%u", MqttInfoStr.Ver);
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}
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}
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