STM32H/STM32G 시리즈 시리얼 포트 데이터 order

STM32F는 이렇게 단순한데

 

검색한 내용중에 H와 G 시리즈가 걸려 나와서

STM32G로 검색해서 가장 위에 있던 STM32G030C6Tx로

프로젝트 구성해보니 내용이 많이 나온다. 눈에 띄는건.. MSB First 라는 항목

 

main.c는 아래와 같이 생성되었고

/* USER CODE END USART1_Init 1 */   huart1.Instance = USART1;   huart1.Init.BaudRate = 115200;   huart1.Init.WordLength = UART_WORDLENGTH_8B;   huart1.Init.StopBits = UART_STOPBITS_1;   huart1.Init.Parity = UART_PARITY_NONE;   huart1.Init.Mode = UART_MODE_TX_RX;   huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;   huart1.Init.OverSampling = UART_OVERSAMPLING_16;   huart1.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;   huart1.Init.ClockPrescaler = UART_PRESCALER_DIV1;   huart1.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_DMADISABLEONERROR_INIT|UART_ADVFEATURE_MSBFIRST_INIT;   huart1.AdvancedInit.DMADisableonRxError = UART_ADVFEATURE_DMA_DISABLEONRXERROR;   huart1.AdvancedInit.MSBFirst = UART_ADVFEATURE_MSBFIRST_ENABLE;

 

Stm32g0xx_hal_uart.h를 따라가면 아래와 같이 먼가 있긴 하다.(귀찮아..)

#define UART_ADVFEATURE_NO_INIT                 0x00000000U          /*!< No advanced feature initialization       */ #define UART_ADVFEATURE_TXINVERT_INIT           0x00000001U          /*!< TX pin active level inversion            */ #define UART_ADVFEATURE_RXINVERT_INIT           0x00000002U          /*!< RX pin active level inversion            */ #define UART_ADVFEATURE_DATAINVERT_INIT         0x00000004U          /*!< Binary data inversion                    */ #define UART_ADVFEATURE_SWAP_INIT               0x00000008U          /*!< TX/RX pins swap                          */ #define UART_ADVFEATURE_RXOVERRUNDISABLE_INIT   0x00000010U          /*!< RX overrun disable                       */ #define UART_ADVFEATURE_DMADISABLEONERROR_INIT  0x00000020U          /*!< DMA disable on Reception Error           */ #define UART_ADVFEATURE_AUTOBAUDRATE_INIT       0x00000040U          /*!< Auto Baud rate detection initialization  */ #define UART_ADVFEATURE_MSBFIRST_INIT           0x00000080U          /*!< Most significant bit sent/received first */ #define USART_CR2_MSBFIRST_Pos       (19U) #define USART_CR2_MSBFIRST_Msk       (0x1UL << USART_CR2_MSBFIRST_Pos)         /*!< 0x00080000 */ #define USART_CR2_MSBFIRST           USART_CR2_MSBFIRST_Msk                    /*!< Most Significant Bit First */ #define UART_ADVFEATURE_MSBFIRST_DISABLE    0x00000000U             /*!< Most significant bit sent/received                                                                          first disable                      */ #define UART_ADVFEATURE_MSBFIRST_ENABLE     USART_CR2_MSBFIRST      /*!< Most significant bit sent/received                                                                          first enable                       */

 

The USART can also communicate synchronously. It can operate as a SPI in Master or Slave mode with programmable clock polarity (CPOL) and phase (CPHA) and programmable data order with MSB or LSB first. The clock is output (in case of Master mode) or input (in case of Slave mode) on the CK pin. No clock pulses are provided during the start and stop bits. When the USART is configured in SPI slave mode, it supports the Transmit underrun error and the NSS hardware or software management.

[링크 : https://www.st.com/.../en.STM32G0-Peripheral-USART-interface-USART.pdf]

[링크 : https://www.st.com/.../en.STM32H7-Peripheral-USART_interface_USART.pdf]