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

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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
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17
arch/arm/src/imxrt/imxrt_lpi2c.c
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@ -126,6 +126,16 @@
#define LPI2C_MASTER 1 #define LPI2C_MASTER 1
#define LPI2C_SLAVE 2 #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 * Private Types
************************************************************************************/ ************************************************************************************/
@ -1785,8 +1795,11 @@ static int imxrt_lpi2c_reset(FAR struct i2c_master_s *dev)
/* Revert the GPIO configuration. */ /* Revert the GPIO configuration. */
imxrt_unconfig_gpio(sda_gpio); sda_gpio = MKI2C_INPUT(sda_gpio);
imxrt_unconfig_gpio(scl_gpio); scl_gpio = MKI2C_INPUT(scl_gpio);
imxrt_config_gpio(sda_gpio);
imxrt_config_gpio(scl_gpio);
/* Re-init the port */ /* Re-init the port */