From 579fbe2e52e83f6bbf092d3d474b7869bbdbfc96 Mon Sep 17 00:00:00 2001 From: David Sidrane Date: Tue, 4 Aug 2020 06:41:27 -0700 Subject: [PATCH] stm32l4 serial:Add SINGLEWIRE PUSHPULL option --- arch/arm/src/stm32l4/stm32l4_serial.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/arm/src/stm32l4/stm32l4_serial.c b/arch/arm/src/stm32l4/stm32l4_serial.c index 89c607b939..1d6c7a8b47 100644 --- a/arch/arm/src/stm32l4/stm32l4_serial.c +++ b/arch/arm/src/stm32l4/stm32l4_serial.c @@ -1873,7 +1873,9 @@ static int stm32l4serial_ioctl(FAR struct file *filep, int cmd, if ((arg & SER_SINGLEWIRE_ENABLED) != 0) { - uint32_t gpio_val = GPIO_OPENDRAIN; + uint32_t gpio_val = (arg & SER_SINGLEWIRE_PUSHPULL) == + SER_SINGLEWIRE_PUSHPULL ? + GPIO_PUSHPULL : GPIO_OPENDRAIN; gpio_val |= (arg & SER_SINGLEWIRE_PULL_MASK) == SER_SINGLEWIRE_PULLUP ? GPIO_PULLUP : GPIO_FLOAT;