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10 years, 3 months ago.
Using multiple serial ports on NUCLEO_L152RE
I am trying to find out the pin definitions that can be use for multiple serial ports on the NUCLEO_L152RE. I got the first one is connected to ST-LINK so cannot be used directly without having to change solder jumpers on board. I got the second UART working fine using PA_9, PA_10 which I found on a previous question that was posted. However I need two ports that I can use directly. So I need the pins that can be used for the third Serial connection. I don't know if I simple need the pin names or is there some configuration that needs to be done to use the third Serial port. Thanks in advance for any help.
1 Answer
10 years, 3 months ago.
Here is the complete list of currently defined pin options:
static const PinMap PinMap_UART_TX[] = { {PA_2, UART_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_USART2)}, {PA_9, UART_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_USART1)}, {PB_6, UART_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_USART1)}, {PB_10, UART_3, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_USART3)}, // {PC_10, UART_3, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_USART3)}, {PC_10, UART_4, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_UART4)}, {PC_12, UART_5, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_UART5)}, {NC, NC, 0} }; static const PinMap PinMap_UART_RX[] = { {PA_3, UART_2, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_USART2)}, {PA_10, UART_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_USART1)}, {PB_7, UART_1, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_USART1)}, {PB_11, UART_3, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_USART3)}, // {PC_11, UART_3, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_USART3)}, {PC_11, UART_4, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_UART4)}, {PD_2, UART_5, STM_PIN_DATA(GPIO_Mode_AF, GPIO_OType_PP, GPIO_PuPd_UP, GPIO_AF_UART5)}, {NC, NC, 0} };