/** ****************************************************************************** * @file Project/main.c * @author MCD Application Team * @version V2.3.0 * @date 16-June-2017 * @brief Main program body ****************************************************************************** * @attention * * <h2><center>&copy; COPYRIGHT 2014 STMicroelectronics</center></h2> * * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License"); * You may not use this file except in compliance with the License. * You may obtain a copy of the License at: * * http://www.st.com/software_license_agreement_liberty_v2 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * ****************************************************************************** */ /* Includes ------------------------------------------------------------------*/ #include "stm8s.h" #include "stdio.h" #include "string.h" /* Private defines -----------------------------------------------------------*/ /* Private function prototypes -----------------------------------------------*/ /* Private functions ---------------------------------------------------------*/ volatile uint16_t ms_counter = 0; static uint8_t sec_count = 0; uint8_t flag_1s = 0; // 1秒标志 uint8_t flag_30s = 0; // 30秒标志 uint8_t flag_pireq_received = 0; // 接收到PIREQ命令标志 uint8_t flag_brightness_received = 0; // 接收到亮度命令标志 uint8_t brightness = 56; const char fixedMsg[] = "$PFEC,musts,1,306,29,1,2,60,64.0,1,4124,,,4661,,*71\r\n"; const char piresp1[] = "$PFEC,pidat,0,MU-190*69\r\n"; const char piresp2[] = "$PFEC,musts,1,306,29,1,2,60,64.0,1,4124,,,4661,,*71\r\n"; const char piresp3[] = "$PFEC,pidat,1,2651020-01.03*56\r\n"; const char piresp4[] = "$PFEC,pidat,3,001822*6E\r\n"; const char target_cmd[] = "$PFEC,pireq*43"; const char brightness_cmd_prefix[] = "$ECDDC,,"; // 亮度控制命令前缀 #define RX_BUF_SIZE 64 char rx_buf[RX_BUF_SIZE]; uint8_t rx_index = 0; // 时钟配置 (内部16MHz HSI) void CLK_Config(void) { CLK_HSIPrescalerConfig(CLK_PRESCALER_HSIDIV1); // 16MHz } // 计算NMEA校验和 uint8_t calculateChecksum(const char* data) { uint8_t crc = 0; while (*data) { crc ^= *data++; } return crc; } // UART1配置 (9600 8N1) void UART1_Config(void) { UART1_DeInit(); UART1_Init( 4800, // 波特率 UART1_WORDLENGTH_8D, // 8位数据 UART1_STOPBITS_1, // 1位停止 UART1_PARITY_NO, // 无校验 UART1_SYNCMODE_CLOCK_DISABLE, // 异步模式 UART1_MODE_TX_ENABLE // 使能发送 ); UART1_Cmd(ENABLE); } // TIM4配置 (1ms中断) void TIM4_Config(void) { TIM4_TimeBaseInit(TIM4_PRESCALER_128, 125); // 16MHz/128=125kHz, 125分频=1ms TIM4_ITConfig(TIM4_IT_UPDATE, ENABLE); TIM4_Cmd(ENABLE); } // TIM2配置 (2kHz PWM) void TIM2_Config(void) { // 配置PD3为TIM2 CH2输出 GPIO_Init(GPIOD, GPIO_PIN_3, GPIO_MODE_OUT_PP_HIGH_FAST); TIM2_TimeBaseInit( TIM2_PRESCALER_8, // 16MHz/8=2MHz 1000 - 1 // 2MHz/1000=2kHz ); // 配置通道2 PWM模式 TIM2_OC2Init( TIM2_OCMODE_PWM1, // PWM模式1 TIM2_OUTPUTSTATE_ENABLE, 560, // 初始占空比56% (1000*0.56=560) TIM2_OCPOLARITY_HIGH // 高电平有效 ); TIM2_OC2PreloadConfig(ENABLE); TIM2_ARRPreloadConfig(ENABLE); TIM2_Cmd(ENABLE); } void updatePWM(uint8_t brightness) { // 确保亮度在1-99范围内 if (brightness < 1) brightness = 1; if (brightness > 99) brightness = 99; uint16_t duty_cycle = brightness * 10; // 计算占空比值 (0.01% * 1000 = 10, 10% * 1000 = 100, 99% * 1000 = 990) TIM2_SetCompare2(duty_cycle); // 更新PWM占空比 } // 发送字符串函数 void UART1_SendString(const char* str) { while (*str) { UART1_SendData8(*str++); while (UART1_GetFlagStatus(UART1_FLAG_TXE) == RESET); } } // 发送亮度状态信息 void sendBrightnessStatus(uint8_t brightness) { char temp[20]; uint8_t cs; // 生成状态信息: $IIDDC,,<brightness>,,R*<checksum>\r\n sprintf(temp, "IIDDC,,%u,,R", brightness); cs = calculateChecksum(temp); sprintf(temp, "$%s*%02X\r\n", temp, cs); UART1_SendString(temp); } // 解析亮度控制命令 uint8_t parseBrightnessCommand(const char* cmd) { // 命令格式: $ECDDC,,<brightness>,,C*<checksum> uint8_t cmd_brightness; uint8_t expected_checksum, actual_checksum; char temp[RX_BUF_SIZE]; if (strlen(cmd) < 15 || cmd[0] != '$') // 检查命令长度和格式 return 0; if (sscanf(cmd + strlen(cmd) - 4, "*%02X", &expected_checksum) != 1) // 提取校验和部分 (最后2个字符) return 0; // 计算实际校验和 (不包括$和*后面的部分) const char* checksum_start = cmd + 1; // 跳过$ const char* checksum_end = strchr(cmd, '*'); if (!checksum_end) return 0; // 复制待校验部分 uint8_t len = checksum_end - checksum_start; if (len >= sizeof(temp)) return 0; strncpy(temp, checksum_start, len); temp[len] = '\0'; actual_checksum = calculateChecksum(temp); // 校验和验证 if (actual_checksum != expected_checksum) return 1; // 提取亮度值 if (sscanf(cmd, "$ECDDC,,%hhu,,C", &cmd_brightness) != 1) return 0; // 确保亮度值在有效范围内 if (cmd_brightness < 1 || cmd_brightness > 99) return 0; // 更新亮度值 brightness = cmd_brightness; return 1; } // TIM4中断服务程序 (1ms定时) INTERRUPT_HANDLER(TIM4_UPD_OVF_IRQHandler, 23) { TIM4_ClearFlag(TIM4_FLAG_UPDATE); if (++ms_counter >= 1000) { // 1秒到达 ms_counter = 0; flag_1s = 1; if (++sec_count >= 30) { // 30秒到达 sec_count = 0; flag_30s = 1; } } } // UART1接收中断服务程序 INTERRUPT_HANDLER(UART1_RX_IRQHandler, 18) { char c = UART1_ReceiveData8(); // 读取接收到的字符 // 处理缓冲区溢出 if (rx_index >= RX_BUF_SIZE - 1) { rx_index = 0; // 缓冲区溢出，重置 } rx_buf[rx_index++] = c; // 存储字符 // 检查是否收到完整命令 (以换行符结束) if (c == '\n') { rx_buf[rx_index] = '\0'; // 终止字符串 if (strstr(rx_buf, target_cmd) != NULL) { // 检查是否收到PIREQ命令 flag_pireq_received = 1; } else if (strstr(rx_buf, brightness_cmd_prefix) != NULL) { // 检查是否收到亮度控制命令 flag_brightness_received = 1; } rx_index = 0; // 重置接收缓冲区 } } void main(void) { /* Infinite loop */ char temp[20]; uint8_t cs; CLK_Config(); UART1_Config(); TIM2_Config(); TIM4_Config(); rx_index = 0; rx_buf[0] = '\0'; // 启用全局中断 rim(); while (1) { if (flag_pireq_received) { flag_pireq_received = 0; // 发送4条响应消息 UART1_SendString(piresp1); UART1_SendString(piresp2); UART1_SendString(piresp3); UART1_SendString(piresp4); } if (flag_brightness_received) { flag_brightness_received = 0; // 解析并更新亮度 if (parseBrightnessCommand(rx_buf)) { // 更新PWM输出 updatePWM(brightness); // 发送亮度状态信息 sendBrightnessStatus(brightness); } } if (flag_1s) { flag_1s = 0; UART1_SendString(fixedMsg); } if (flag_30s) { flag_30s = 0; sprintf(temp, "IIDDC,,%u,,R", brightness); cs = calculateChecksum(temp); sprintf(temp, "$%s*%02X\r\n", temp, cs); UART1_SendString(temp); } } } #ifdef USE_FULL_ASSERT /** * @brief Reports the name of the source file and the source line number * where the assert_param error has occurred. * @param file: pointer to the source file name * @param line: assert_param error line source number * @retval : None */ void assert_failed(u8* file, u32 line) { /* User can add his own implementation to report the file name and line number, ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */ /* Infinite loop */ while (1) { } } #endif /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ 这是stm8S003F3P6的程序，帮我看看flash和ram大小合适吗