uart4 中断接收，轮循发送出现UART_WaitOnFlagUntilTimeout

发布于 2020-01-17 11:53:56 浏览：1107 订阅该版

stm32F103vet  rt-thread nano 使用串口uart4中断接收，轮询发送，出现UART_WaitOnFlagUntilTimeout错误
*/
    GPIO_InitStruct.Pin     = GPIO_PIN_10;
    GPIO_InitStruct.Mode    = GPIO_MODE_AF_PP;
    GPIO_InitStruct.Speed   = GPIO_SPEED_FREQ_HIGH;
    HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
    GPIO_InitStruct.Pin     = GPIO_PIN_11;
    GPIO_InitStruct.Mode    = GPIO_MODE_INPUT;
    GPIO_InitStruct.Pull    = GPIO_PULLUP;
    HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
    /* UART4 interrupt Init */
    HAL_NVIC_SetPriority(UART4_IRQn, 5, 0);
    HAL_NVIC_EnableIRQ(UART4_IRQn);

2006 - 2019 Copyright by rt-thread team
msh >00000101 /I RN8302B take mb_send_token_mutex 
00000102 /I RN8302B release mb_send_sem 
00000102 /I mb get mb_send_sem 
00000103 /I RS485 TX 
00000114 /I mb . 
00000124 /I mb . 
psr: 0x21000000
r00: 0x000000b7
r01: 0x0000350c
r02: 0x00000001
r03: 0x000000f8
r04: 0x20010000
r05: 0x0000005e
r06: 0x08007b7f
r07: 0x08007c7f
r08: 0x00000001
r09: 0x000001f4
r10: 0x00000002
r11: 0x2000350e
r12: 0x08007860
 lr: 0x080024db
 pc: 0x08000894
hard fault on thread: mb_send
thread   pri  status      sp     stack size max used left tick  error
-------- ---  ------- ---------- ----------  ------  ---------- ---
check_us  16  ready   0x0000005c 0x00000280    14%   0x00000014 -02
rn8302b   16  suspend 0x0000005c 0x00000400    08%   0x00000014 000
AT24CM01  16  suspend 0x0000005c 0x00000400    08%   0x00000014 000
w5500     16  suspend 0x00000084 0x00000400    19%   0x00000014 000
mb_send   16  ready   0x0000006c 0x00000400    36%   0x00000001 000
vol_curr  16  suspend 0x00000074 0x00000200    36%   0x00000013 000
run_stat  16  suspend 0x0000005c 0x00000200    17%   0x00000014 000
key_entr  16  ready   0x0000005c 0x00000200    17%   0x00000014 -02
tshell    21  ready   0x0000006c 0x00000400    10%   0x0000000a -02
tidle     31  ready   0x00000040 0x00000080    62%   0x00000008 000
bus fault:
SCB_CFSR_BFSR:0x82 PRECISERR SCB->BFAR:20010000