인프런 커뮤니티 질문&답변

정말 빠르게 답변주셔서 정말정말 감사합니다!

우선 친절하게 설명해주신 영상대로 포팅 완료했고, 기존의 문제는 해결했습니다.

기존 프로젝트를 import할 때 MCU도 일치해야 문제가 안생긴다는 점을 배웠습니다. 정말 감사합니다.

printf()와 관련된 많은 오류를 새롭게 발견했습니다. 결과적으로 두 MCU의 UART와 HAL에 대한 코드가 달라서 발생하는 문제인 것 같습니다. 

`printf()`를 하기 위해 `__io_putchar()`를 main.c에 넣으니 

unknown type name 'UART_HandleTypeDef'; did you mean 'I2C_HandleTypeDef'?
undefined reference to `HAL_UART_Transmit'

console에 위와 같은 에러가 발생했습니다. 

'01_TASKMAN/Src/main.c'을 그대로 저의 'main.c'에 복사한 뒤 디버깅을 하면, 

make -j8 all 
arm-none-eabi-gcc "../Core/Src/main.c" -mcpu=cortex-m0plus -std=gnu11 -g3 -DDEBUG -DUSE_HAL_DRIVER -DSTM32L053xx -c -I../Core/Inc -I../Drivers/STM32L0xx_HAL_Driver/Inc -I../Drivers/STM32L0xx_HAL_Driver/Inc/Legacy -I../Drivers/CMSIS/Device/ST/STM32L0xx/Include -I../Drivers/CMSIS/Include -I../Middlewares/Third_Party/FreeRTOS/Source/include -I../Middlewares/Third_Party/FreeRTOS/Source/CMSIS_RTOS -I../Middlewares/Third_Party/FreeRTOS/Source/portable/GCC/ARM_CM0 -O0 -ffunction-sections -fdata-sections -Wall -fstack-usage -MMD -MP -MF"Core/Src/main.d" -MT"Core/Src/main.o" --specs=nano.specs -mfloat-abi=soft -mthumb -o "Core/Src/main.o"
../Core/Src/main.c:48:1: error: unknown type name 'UART_HandleTypeDef'; did you mean 'I2C_HandleTypeDef'?
   48 | UART_HandleTypeDef huart2;
      | ^~~~~~~~~~~~~~~~~~
      | I2C_HandleTypeDef
../Core/Src/main.c: In function '__io_putchar':
../Core/Src/main.c:73:3: warning: implicit declaration of function 'HAL_UART_Transmit' [-Wimplicit-function-declaration]
   73 |   HAL_UART_Transmit(&huart2, (uint8_t*)&"\r", 1, HAL_MAX_DELAY);
      |   ^~~~~~~~~~~~~~~~~
../Core/Src/main.c: In function 'SystemClock_Config':
../Core/Src/main.c:176:37: error: 'RCC_PLLSOURCE_HSI_DIV2' undeclared (first use in this function); did you mean 'RCC_PLLSOURCE_HSI'?
  176 |   RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI_DIV2;
      |                                     ^~~~~~~~~~~~~~~~~~~~~~
      |                                     RCC_PLLSOURCE_HSI
../Core/Src/main.c:176:37: note: each undeclared identifier is reported only once for each function it appears in
../Core/Src/main.c:191:47: error: 'FLASH_LATENCY_2' undeclared (first use in this function); did you mean 'FLASH_LATENCY_0'?
  191 |   if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
      |                                               ^~~~~~~~~~~~~~~
      |                                               FLASH_LATENCY_0
../Core/Src/main.c: In function 'MX_USART2_UART_Init':
../Core/Src/main.c:212:9: error: request for member 'Instance' in something not a structure or union
  212 |   huart2.Instance = USART2;
      |         ^
../Core/Src/main.c:213:9: error: request for member 'Init' in something not a structure or union
  213 |   huart2.Init.BaudRate = 115200;
      |         ^
../Core/Src/main.c:214:9: error: request for member 'Init' in something not a structure or union
  214 |   huart2.Init.WordLength = UART_WORDLENGTH_8B;
      |         ^
../Core/Src/main.c:214:28: error: 'UART_WORDLENGTH_8B' undeclared (first use in this function)
  214 |   huart2.Init.WordLength = UART_WORDLENGTH_8B;
      |                            ^~~~~~~~~~~~~~~~~~
../Core/Src/main.c:215:9: error: request for member 'Init' in something not a structure or union
  215 |   huart2.Init.StopBits = UART_STOPBITS_1;
      |         ^
../Core/Src/main.c:215:26: error: 'UART_STOPBITS_1' undeclared (first use in this function)
  215 |   huart2.Init.StopBits = UART_STOPBITS_1;
      |                          ^~~~~~~~~~~~~~~
../Core/Src/main.c:216:9: error: request for member 'Init' in something not a structure or union
  216 |   huart2.Init.Parity = UART_PARITY_NONE;
      |         ^
../Core/Src/main.c:216:24: error: 'UART_PARITY_NONE' undeclared (first use in this function)
  216 |   huart2.Init.Parity = UART_PARITY_NONE;
      |                        ^~~~~~~~~~~~~~~~
../Core/Src/main.c:217:9: error: request for member 'Init' in something not a structure or union
  217 |   huart2.Init.Mode = UART_MODE_TX_RX;
      |         ^
../Core/Src/main.c:217:22: error: 'UART_MODE_TX_RX' undeclared (first use in this function)
  217 |   huart2.Init.Mode = UART_MODE_TX_RX;
      |                      ^~~~~~~~~~~~~~~
../Core/Src/main.c:218:9: error: request for member 'Init' in something not a structure or union
  218 |   huart2.Init.HwFlowCtl = UART_HWCONTROL_NONE;
      |         ^
../Core/Src/main.c:218:27: error: 'UART_HWCONTROL_NONE' undeclared (first use in this function)
  218 |   huart2.Init.HwFlowCtl = UART_HWCONTROL_NONE;
      |                           ^~~~~~~~~~~~~~~~~~~
../Core/Src/main.c:219:9: error: request for member 'Init' in something not a structure or union
  219 |   huart2.Init.OverSampling = UART_OVERSAMPLING_16;
      |         ^
../Core/Src/main.c:219:30: error: 'UART_OVERSAMPLING_16' undeclared (first use in this function)
  219 |   huart2.Init.OverSampling = UART_OVERSAMPLING_16;
      |                              ^~~~~~~~~~~~~~~~~~~~
../Core/Src/main.c:220:7: warning: implicit declaration of function 'HAL_UART_Init'; did you mean 'HAL_I2C_Init'? [-Wimplicit-function-declaration]
  220 |   if (HAL_UART_Init(&huart2) != HAL_OK)
      |       ^~~~~~~~~~~~~
      |       HAL_I2C_Init
../Core/Src/main.c: In function 'MX_GPIO_Init':
../Core/Src/main.c:246:21: error: 'LD2_GPIO_Port' undeclared (first use in this function)
  246 |   HAL_GPIO_WritePin(LD2_GPIO_Port, LD2_Pin, GPIO_PIN_RESET);
      |                     ^~~~~~~~~~~~~
../Core/Src/main.c:246:36: error: 'LD2_Pin' undeclared (first use in this function)
  246 |   HAL_GPIO_WritePin(LD2_GPIO_Port, LD2_Pin, GPIO_PIN_RESET);
      |                                    ^~~~~~~
../Core/Src/main.c:249:25: error: 'B1_Pin' undeclared (first use in this function)
  249 |   GPIO_InitStruct.Pin = B1_Pin;
      |                         ^~~~~~
../Core/Src/main.c:252:17: error: 'B1_GPIO_Port' undeclared (first use in this function)
  252 |   HAL_GPIO_Init(B1_GPIO_Port, &GPIO_InitStruct);
      |                 ^~~~~~~~~~~~
../Core/Src/main.c:262:24: error: 'EXTI15_10_IRQn' undeclared (first use in this function); did you mean 'EXTI4_15_IRQn'?
  262 |   HAL_NVIC_SetPriority(EXTI15_10_IRQn, 5, 0);
      |                        ^~~~~~~~~~~~~~
      |                        EXTI4_15_IRQn
../Core/Src/main.c: In function 'OSVersion':
../Core/Src/main.c:271:9: error: 'VERSION_RTOS' undeclared (first use in this function)
  271 |  return VERSION_RTOS;
      |         ^~~~~~~~~~~~
../Core/Src/main.c:272:1: warning: control reaches end of non-void function [-Wreturn-type]
  272 | }
      | ^
make: *** [Core/Src/subdir.mk:40: Core/Src/main.o] Error 1
"make -j8 all" terminated with exit code 2. Build might be incomplete.

22:18:09 Build Failed. 24 errors, 3 warnings. (took 983ms)

위와 같이 UART와 HAL과 관련된 무수한 오류가 뜨는 것을 확인할 수 있습니다.

선생님의 예제파일인 '01_TASKMAN/Src/main.c'와 자동생성된 저의 'main.c'의 내용물이 많이 다르고, MCU를 다른 걸 사용하다보니 '01_TASKMAN/Src/stm32f1xx~~.c'와 저의 'stm32l0xx~~.c'의 내용이 달라서 발생하는 문제인 것 같습니다.

빠르게 해결할 수 있는 문제가 아닌 것 같아 우선 F103RB 보드를 구매해서 강의를 수강하겠습니다

만일 보드를 바꿔도 문제가 생긴다면 이쪽과 메일로 추가문의 드리겠습니다! 감사합니다!