From 515cb55d3424e3f30c8518529334a47846301eea Mon Sep 17 00:00:00 2001 From: blckmn Date: Sat, 26 Nov 2016 07:16:33 +1100 Subject: [PATCH] Enabling pull-ups for F4 serial --- src/main/drivers/serial_uart_stm32f4xx.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/src/main/drivers/serial_uart_stm32f4xx.c b/src/main/drivers/serial_uart_stm32f4xx.c index 2f72317eaf..79d3e18ad0 100644 --- a/src/main/drivers/serial_uart_stm32f4xx.c +++ b/src/main/drivers/serial_uart_stm32f4xx.c @@ -345,12 +345,12 @@ uartPort_t *serialUART(UARTDevice device, uint32_t baudRate, portMode_t mode, po else { if (mode & MODE_TX) { IOInit(tx, OWNER_SERIAL_TX, RESOURCE_INDEX(device)); - IOConfigGPIOAF(tx, IOCFG_AF_PP, uart->af); + IOConfigGPIOAF(tx, IOCFG_AF_PP_UP, uart->af); } if (mode & MODE_RX) { IOInit(rx, OWNER_SERIAL_RX, RESOURCE_INDEX(device)); - IOConfigGPIOAF(rx, IOCFG_AF_PP, uart->af); + IOConfigGPIOAF(rx, IOCFG_AF_PP_UP, uart->af); } }