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stm32h7 serial:Add SINGLEWIRE PUSHPULL option

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This commit is contained in:
David Sidrane
2020-08-04 06:41:02 -07:00
committed by Xiang Xiao
parent d61f14dd3c
commit 48c81522f9
1 changed files with 3 additions and 1 deletions
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arch/arm/src/stm32h7/stm32_serial.c
+3 -1
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@@ -1531,7 +1531,9 @@ static int up_ioctl(struct file *filep, int cmd, unsigned long arg)
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;
gpio_val |= (arg & SER_SINGLEWIRE_PULL_MASK) == SER_SINGLEWIRE_PULLDOWN ? GPIO_PULLDOWN : GPIO_FLOAT;
stm32_configgpio((priv->tx_gpio & ~(GPIO_PUPD_MASK | GPIO_OPENDRAIN)) | gpio_val);