sergiotarxz/nuttx
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

arch/arm/src/imxrt/imxrt_lpi2c.c: I2C Reset rework

Browse Source
This commit is contained in:
David Sidrane 2019-01-16 18:10:13 -06:00 committed by Gregory Nutt
parent dbd9172e57
commit 026feadbe3
1 changed files with 15 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
arch/arm/src/imxrt/imxrt_lpi2c.c
View File

@ -126,6 +126,16 @@
#define LPI2C_MASTER 1
#define LPI2C_SLAVE 2
#define MKI2C_OUTPUT(p) (((p) & GPIO_PADMUX_MASK) | \
IOMUX_OPENDRAIN | IOMUX_DRIVE_33OHM | \
IOMUX_SLEW_SLOW | (5 << GPIO_ALT_SHIFT) | \
IOMUX_PULL_NONE | GPIO_OUTPUT_ONE)
#define MKI2C_INPUT(p) (((p) & GPIO_PADMUX_MASK) | \
IOMUX_DRIVE_HIZ | IOMUX_SLEW_SLOW | \
IOMUX_CMOS_INPUT | (5 << GPIO_ALT_SHIFT) | \
IOMUX_PULL_NONE)
/************************************************************************************
* Private Types
************************************************************************************/
@ -1785,8 +1795,11 @@ static int imxrt_lpi2c_reset(FAR struct i2c_master_s *dev)
/* Revert the GPIO configuration. */
imxrt_unconfig_gpio(sda_gpio);
imxrt_unconfig_gpio(scl_gpio);
sda_gpio = MKI2C_INPUT(sda_gpio);
scl_gpio = MKI2C_INPUT(scl_gpio);
imxrt_config_gpio(sda_gpio);
imxrt_config_gpio(scl_gpio);
/* Re-init the port */