fix: 修复放电功能相关的若干问题

1. 修改apps/chrg/applications/utils/chrg_sink.c：
   - 调整寄存器数组长度，新增继电器控制相关的初始化配置
   - 在放电初始化前先关闭所有功率板继电器
2. 修改apps/chrg/applications/thread/chrg_north.c：
   - 修复变量类型不匹配问题，将uint8_t改为rt_uint8_t
   - 新增参数合法性校验逻辑，避免空指针和越界访问
   - 新增电压状态标记，仅在电压有效后才将低压视为故障
   - 修复无符号整数溢出问题，避免电压差值计算异常
   - 优化电流异常时的状态机切换逻辑
   - 非工作状态下重置所有状态标记

apps/chrg/applications/thread/chrg_north.c

@@ -207,11 +207,17 @@ void chrg_source_setting(rt_uint8_t *frame_data, eIDX_SOU_CH idx,
 void chrg_sink_parse(rt_uint8_t *frame_data, eIDX_SOU_CH idx, 
                        struct chrg_switch_t *pSW, struct chrg_north_t *pNOR)
 {
-  rt_uint16_t volt_mv = ((frame_data[4] << 8) | frame_data[5])*10;
+	rt_uint16_t volt_mv = ((frame_data[4] << 8) | frame_data[5]) * 10;
-  static uint8_t volt_low[TOTAL_SOU_CHS] = {0};
+	static rt_uint8_t volt_low[TOTAL_SOU_CHS] = {0};
-	static uint8_t no_curr[TOTAL_SOU_CHS] = {0};
+	static rt_uint8_t no_curr[TOTAL_SOU_CHS] = {0};
-  pSW->VZ = ((frame_data[14] << 8) | frame_data[15]);
+	static rt_uint8_t volt_set_ok[TOTAL_SOU_CHS] = {0};
-  pSW->VF = ((frame_data[16] << 8) | frame_data[17]);
+
+	if ((idx >= TOTAL_SOU_CHS) || (pSW == RT_NULL)) {
+		return;
+	}
+
+	pSW->VZ = ((frame_data[14] << 8) | frame_data[15]);
+	pSW->VF = ((frame_data[16] << 8) | frame_data[17]);
 
 #if DEBUG_NORTH
    	LOG_D("Sink[%d] real volt: %d mV", idx, volt_mv); 
@@ -220,25 +226,42 @@ void chrg_sink_parse(rt_uint8_t *frame_data, eIDX_SOU_CH idx,
 	if(pSW->sink.On_work == 1 && pSW->sink.test.test_mode == 0) {
 		if (volt_mv <= WORK_MIN_VOLT) { // 电压过低，禁止进入工作状态机
 //			volt_low[idx]++;
+			/* Treat low voltage as a fault only after voltage was once valid. */
+			if (volt_set_ok[idx] == 1) {
+				if (++volt_low[idx] >= 5) {
+					volt_set_ok[idx] = 0;
+					no_curr[idx] = 0;
+					pSW->sink.work_mode = SINK_WORK_LOW;
+				}
+			}
 //			if(volt_low[idx]>=5) pSW->sink.work_on_step = SINK_WORK_LOW; // 复位工作状态机
 		}
 		else{		// 电压稳定时执行工作状态机（继电器/工作模式切换）
 			volt_low[idx] = 0;
+			volt_set_ok[idx] = 1;
 			pSW->change_flag = 0;
-			if((pSW->sink.pro_loadv - volt_mv) <= 2000){
+			/* Avoid unsigned underflow when actual voltage is above target. */
+			if ((rt_uint32_t)volt_mv + 2000 >= pSW->sink.pro_loadv) {
 				pSW->sink.work_mode = SINK_WORK_RUNING;
-				if(pSW->Now_current<=200){
+				/* Voltage is normal but current is still zero: retry from WAIT. */
-					if(no_curr[idx]++>=5){
+				if (pSW->Now_current <= 200) {
+					if (++no_curr[idx] >= 5) {
 						pSW->sink.work_mode = SINK_WORK_WAIT;	
 						no_curr[idx] = 0;
 					}						
 				}
-				else no_curr[idx] = 0;
+				else {
+					no_curr[idx] = 0;
+				}
+			} else {
+				no_curr[idx] = 0;
 			}
 		}
 	}
 	else{
 		volt_low[idx] = 0;
+		no_curr[idx] = 0;
+		volt_set_ok[idx] = 0;
 //		pSW->sink.work_on_step = SINK_WORK_STOP; // 复位工作状态机
 	}
 	chrg_sink_work(idx,pSW);

apps/chrg/applications/utils/chrg_sink.c

@@ -448,8 +448,8 @@ static int chrg_sink_work_init(eIDX_SOU_CH idx, struct chrg_switch_t *pSW)
 {
 	struct chrg_south_t *pSOU = &chrgsouth;
 	struct chrg_north_t *pNOR = &chrgnorth;
-	rt_uint16_t regs[3] = {REG_CURRENT_OUT + 1, REG_MODE, 0};
+	rt_uint16_t regs[4] = {REG_CURRENT_OUT + 1, REG_MODE, 0, 0};
-	rt_uint16_t vals[3] = {0, pSW->CV_mode, 0};
+	rt_uint16_t vals[4] = {0, pSW->CV_mode, 0, 0};
 	rt_uint8_t count = 2;
 
 	if (pSW->sink.test.test_mode_old == 1) {
@@ -459,6 +459,9 @@ static int chrg_sink_work_init(eIDX_SOU_CH idx, struct chrg_switch_t *pSW)
 		regs[count] = ModbusRTU_DYNA_CMD_MODE_FLAG;
 		vals[count++] = ModbusRTU_DYNA_CMD_MODE_STOP;
 	}
+	/* Close both power-board relays before starting sink init. */
+	regs[count] = REG_REL_ON;
+	vals[count++] = ALL_REL_OFF;
 	if (chrg_sou_com_batch_submit(idx, regs, vals, count) != 0) {
 		return -1;
 	}

apps/chrg/keil_sink_retry_rebuild.log

@@ -0,0 +1,130 @@
+*** Using Compiler 'V6.16', folder: 'D:\Program Files\Keil_v5\ARM\ARMCLANG\Bin'
+Rebuild target 'chrg'
+compiling main.c...
+compiling chrg_switch.c...
+compiling chrg_wdt.c...
+compiling chrg_gpio.c...
+compiling chrg_tmr.c...
+compiling chrg_fal.c...
+compiling chrg_tty.c...
+compiling chrg_led.c...
+compiling chrg_vcom.c...
+compiling chrg_rel.c...
+compiling chrg_roll_nor.c...
+compiling chrg_north.c...
+compiling chrg_south.c...
+compiling chrg_comm.c...
+compiling chrg_roll_sou.c...
+compiling chrg_lcd.c...
+compiling chrg_thread.c...
+compiling chrg_source.c...
+compiling chrg_sink.c...
+compiling chrg_north_pkg.c...
+compiling chrg_eload.c...
+compiling chrg_utils.c...
+compiling syscall_mem.c...
+compiling syscalls.c...
+compiling cctype.c...
+compiling cstdlib.c...
+compiling cstring.c...
+compiling ctime.c...
+compiling cunistd.c...
+compiling cwchar.c...
+compiling device.c...
+compiling hwtimer.c...
+compiling completion_comm.c...
+compiling completion_up.c...
+compiling condvar.c...
+compiling dataqueue.c...
+compiling pipe.c...
+compiling ringblk_buf.c...
+compiling ringbuffer.c...
+compiling waitqueue.c...
+compiling workqueue.c...
+compiling dev_pin.c...
+compiling dev_serial.c...
+compiling dev_watchdog.c...
+compiling stm32f4xx_hal_msp.c...
+compiling board.c...
+compiling drv_flash_f4.c...
+compiling drv_gpio.c...
+compiling drv_tim.c...
+compiling drv_usart.c...
+compiling drv_usbd.c...
+compiling drv_wdt.c...
+compiling drv_common.c...
+compiling fal.c...
+compiling fal_flash.c...
+compiling fal_partition.c...
+compiling fal_rtt.c...
+compiling shell.c...
+compiling msh_parse.c...
+compiling cmd.c...
+compiling msh.c...
+compiling clock.c...
+compiling components.c...
+compiling cpu_up.c...
+compiling defunct.c...
+compiling idle.c...
+compiling ipc.c...
+compiling irq.c...
+compiling kservice.c...
+compiling memheap.c...
+compiling mempool.c...
+compiling object.c...
+compiling scheduler_comm.c...
+compiling scheduler_up.c...
+compiling thread.c...
+compiling timer.c...
+compiling rt_vsnprintf_tiny.c...
+compiling kerrno.c...
+compiling kstring.c...
+compiling rt_vsscanf.c...
+compiling kstdio.c...
+compiling atomic_arm.c...
+compiling div0.c...
+compiling showmem.c...
+assembling context_rvds.S...
+compiling cpuport.c...
+compiling usbdevice.c...
+compiling cdc_vcom.c...
+compiling usbdevice_core.c...
+assembling startup_stm32f405xx.s...
+compiling system_stm32f4xx.c...
+compiling stm32f4xx_hal_gpio.c...
+compiling stm32f4xx_hal_flash.c...
+compiling stm32f4xx_hal_usart.c...
+compiling stm32f4xx_hal_rng.c...
+compiling stm32f4xx_hal_uart.c...
+compiling stm32f4xx_hal_wwdg.c...
+compiling stm32f4xx_hal_tim.c...
+compiling stm32f4xx_hal_cryp_ex.c...
+compiling stm32f4xx_hal_pwr.c...
+compiling stm32f4xx_hal_rcc.c...
+compiling stm32f4xx_hal_hcd.c...
+compiling stm32f4xx_ll_usb.c...
+compiling stm32f4xx_hal_pccard.c...
+compiling stm32f4xx_hal_flash_ex.c...
+compiling stm32f4xx_hal_flash_ramfunc.c...
+compiling stm32f4xx_hal_tim_ex.c...
+compiling stm32f4xx_hal_lptim.c...
+compiling stm32f4xx_hal_cec.c...
+compiling stm32f4xx_hal_cryp.c...
+compiling stm32f4xx_hal.c...
+compiling stm32f4xx_hal_iwdg.c...
+compiling stm32f4xx_hal_pcd_ex.c...
+compiling stm32f4xx_hal_pcd.c...
+compiling stm32f4xx_hal_crc.c...
+compiling stm32f4xx_hal_dma_ex.c...
+compiling stm32f4xx_hal_cortex.c...
+compiling stm32f4xx_hal_dma.c...
+compiling stm32f4xx_hal_rcc_ex.c...
+compiling stm32f4xx_hal_pwr_ex.c...
+compiling ulog.c...
+compiling console_be.c...
+linking...
+Program Size: Code=140360 RO-data=15152 RW-data=8544 ZI-data=13712  
+FromELF: creating hex file...
+After Build - User command #1: fromelf --bin  .\build\keil\Obj\chrg.axf -o build/chrg.bin
+".\build\keil\Obj\chrg.axf" - 0 Error(s), 0 Warning(s).
+Build Time Elapsed:  00:00:29