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Merged in bkueng/nuttx/uart_invert_ioctl_kinetis (pull request #937)

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kinetis: add uart signal inversion support

Approved-by: Gregory Nutt <gnutt@nuttx.org>
This commit is contained in:
Beat Küng
2019-07-05 14:24:52 +00:00
committed by Gregory Nutt
parent fc7d43dc55
commit 9878997f72
2 changed files with 55 additions and 13 deletions
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arch/arm/src/kinetis/Kconfig
+8
View File
@@ -1059,6 +1059,14 @@ config KINETIS_UART_SINGLEWIRE
Enable single wire UART and LPUART support. The option enables support
for the TIOCSSINGLEWIRE ioctl in the Kinetis serial drivers.
config KINETIS_UART_INVERT
bool "Signal Invert Support"
default n
depends on KINETIS_UART || KINETIS_LPUART
---help---
Enable signal inversion UART support. The option enables support for the
TIOCSINVERT ioctl in the Kinetis serial driver.
endif # KINETIS_SERIALDRIVER || OTHER_SERIALDRIVER
config KINETIS_UARTFIFOS
arch/arm/src/kinetis/kinetis_serial.c
+47 -13
View File
@@ -1267,30 +1267,21 @@ static int up_interrupts(int irq, void *context, FAR void *arg)
static int up_ioctl(struct file *filep, int cmd, unsigned long arg)
{
#if defined(CONFIG_SERIAL_TERMIOS) || defined(CONFIG_SERIAL_TIOCSERGSTRUCT) || \
defined(CONFIG_KINETIS_SERIALBRK_BSDCOMPAT)
struct inode *inode;
struct uart_dev_s *dev;
uint8_t regval;
#endif
#if defined(CONFIG_SERIAL_TERMIOS) || defined(CONFIG_KINETIS_SERIALBRK_BSDCOMPAT)
struct up_dev_s *priv;
bool iflow = false;
bool oflow = false;
#endif
struct inode *inode;
struct uart_dev_s *dev;
uint8_t regval;
struct up_dev_s *priv;
int ret = OK;
#if defined(CONFIG_SERIAL_TERMIOS) || defined(CONFIG_SERIAL_TIOCSERGSTRUCT) || \
defined(CONFIG_KINETIS_SERIALBRK_BSDCOMPAT)
DEBUGASSERT(filep != NULL && filep->f_inode != NULL);
inode = filep->f_inode;
dev = inode->i_private;
DEBUGASSERT(dev != NULL && dev->priv != NULL);
#endif
#if defined(CONFIG_SERIAL_TERMIOS) || defined(CONFIG_KINETIS_SERIALBRK_BSDCOMPAT)
priv = (struct up_dev_s *)dev->priv;
#endif
switch (cmd)
{
@@ -1501,11 +1492,54 @@ static int up_ioctl(struct file *filep, int cmd, unsigned long arg)
break;
#endif /* CONFIG_KINETIS_UART_BREAKS */
#ifdef CONFIG_KINETIS_UART_INVERT
case TIOCSINVERT:
{
uint8_t s2;
uint8_t c3;
irqstate_t flags;
flags = enter_critical_section();
s2 = up_serialin(priv, KINETIS_UART_S2_OFFSET);
c3 = up_serialin(priv, KINETIS_UART_C3_OFFSET);
/* {R|T}XINV bit fields can written any time */
if (arg & SER_INVERT_ENABLED_RX)
{
s2 |= UART_S2_RXINV;
}
else
{
s2 &= ~UART_S2_RXINV;
}
if (arg & SER_INVERT_ENABLED_TX)
{
c3 |= UART_C3_TXINV;
}
else
{
c3 &= ~UART_C3_TXINV;
}
up_serialout(priv, KINETIS_UART_S2_OFFSET, s2);
up_serialout(priv, KINETIS_UART_C3_OFFSET, c3);
leave_critical_section(flags);
}
break;
#endif
default:
ret = -ENOTTY;
break;
}
UNUSED(regval);
UNUSED(priv);
return ret;
}