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I2C pinmap and HAL fixes for MIMXRT #150

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Merged
merged 2 commits into from
Mar 22, 2023
Merged

I2C pinmap and HAL fixes for MIMXRT #150

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0939a91
Start fixing up I2C on MIMXRT
multiplemonomials Mar 7, 2023
50d0d5e
Fix typod peripheral names
multiplemonomials Mar 9, 2023
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6 changes: 4 additions & 2 deletions targets/TARGET_NXP/TARGET_MCUXpresso_MCUS/TARGET_IMX/i2c_api.c
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Original file line number Diff line number Diff line change
Expand Up @@ -138,8 +138,10 @@ int i2c_write(i2c_t *obj, int address, const char *data, int length, int stop)
/* Send the STOP signal */
base->MTDR = LPI2C_MTDR_CMD(0x2U);

/* Wait till STOP has been sent successfully */
while (!(base->MSR & kLPI2C_MasterStopDetectFlag)) {
// Wait until:
// - Stop has been generated
// - Bus ready to transmit data again
while(!(base->MSR & kLPI2C_MasterStopDetectFlag) || !(base->MSR & kLPI2C_MasterTxReadyFlag)) {
}

if (base->MSR & kLPI2C_MasterNackDetectFlag) {
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26 changes: 20 additions & 6 deletions targets/TARGET_NXP/TARGET_MCUXpresso_MCUS/TARGET_MIMXRT1050/PeripheralPins.c
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Expand Up @@ -73,21 +73,35 @@ const PinMap PinMap_DAC[] = {

/************I2C***************/
const PinMap PinMap_I2C_SDA[] = {
{GPIO_SD_B1_05, I2C_1, ((0U << DAISY_REG_VALUE_SHIFT) | (0x4D0 << DAISY_REG_SHIFT) | (1U << SION_BIT_SHIFT) | 2)},
{GPIO_AD_B1_01, I2C_1, ((1U << DAISY_REG_VALUE_SHIFT) | (0x4D0 << DAISY_REG_SHIFT) | (1U << SION_BIT_SHIFT) | 3)},

// I2C3 is ALT1 of GPIO_AD_B1_06
// GPIO_AD_B1_06 is daisy chain input 3 of I2C3 per the IOMUXC_LPI2C3_SDA_SELECT_INPUT register description
{GPIO_AD_B1_06, I2C_3, ((3U << DAISY_REG_VALUE_SHIFT) | (0x4E0 << DAISY_REG_SHIFT) | (1U << SION_BIT_SHIFT) | 1)},
{GPIO_B0_05, I2C_2, ((1U << DAISY_REG_VALUE_SHIFT) | (0x4D8 << DAISY_REG_SHIFT) | (1U << SION_BIT_SHIFT) | 2)},
{GPIO_SD_B1_10, I2C_2, ((0U << DAISY_REG_VALUE_SHIFT) | (0x4D8 << DAISY_REG_SHIFT) | (1U << SION_BIT_SHIFT) | 3)},

{GPIO_AD_B1_06, I2C_3, ((2U << DAISY_REG_VALUE_SHIFT) | (0x4E0 << DAISY_REG_SHIFT) | (1U << SION_BIT_SHIFT) | 1)},
{GPIO_EMC_21, I2C_3, ((0U << DAISY_REG_VALUE_SHIFT) | (0x4E0 << DAISY_REG_SHIFT) | (1U << SION_BIT_SHIFT) | 2)},
{GPIO_SD_B0_01, I2C_3, ((1U << DAISY_REG_VALUE_SHIFT) | (0x4E0 << DAISY_REG_SHIFT) | (1U << SION_BIT_SHIFT) | 2)},

{GPIO_EMC_11, I2C_4, ((0U << DAISY_REG_VALUE_SHIFT) | (0x4E8 << DAISY_REG_SHIFT) | (1U << SION_BIT_SHIFT) | 2)},
{GPIO_AD_B0_13, I2C_4, ((1U << DAISY_REG_VALUE_SHIFT) | (0x4E8 << DAISY_REG_SHIFT) | (1U << SION_BIT_SHIFT) | 0)},

{NC , NC , 0}
};

const PinMap PinMap_I2C_SCL[] = {
{GPIO_SD_B1_04, I2C_1, ((0U << DAISY_REG_VALUE_SHIFT) | (0x4CC << DAISY_REG_SHIFT) | (1U << SION_BIT_SHIFT) | 2)},
{GPIO_AD_B1_00, I2C_1, ((1U << DAISY_REG_VALUE_SHIFT) | (0x4CC << DAISY_REG_SHIFT) | (1U << SION_BIT_SHIFT) | 3)},

// I2C3 is ALT1 of GPIO_AD_B1_07
// GPIO_AD_B1_07 is daisy chain input 3 of I2C3 per the IOMUXC_LPI2C3_SCL_SELECT_INPUT register description
{GPIO_AD_B1_07, I2C_3, ((3U << DAISY_REG_VALUE_SHIFT) | (0x4DC << DAISY_REG_SHIFT) | (1U << SION_BIT_SHIFT) | 1)},
{GPIO_SD_B1_11, I2C_2, ((0U << DAISY_REG_VALUE_SHIFT) | (0x4D4 << DAISY_REG_SHIFT) | (1U << SION_BIT_SHIFT) | 3)},
{GPIO_B0_04, I2C_2, ((1U << DAISY_REG_VALUE_SHIFT) | (0x4D4 << DAISY_REG_SHIFT) | (1U << SION_BIT_SHIFT) | 2)},

{GPIO_EMC_22, I2C_3, ((0U << DAISY_REG_VALUE_SHIFT) | (0x4DC << DAISY_REG_SHIFT) | (1U << SION_BIT_SHIFT) | 2)},
{GPIO_SD_B0_00, I2C_3, ((1U << DAISY_REG_VALUE_SHIFT) | (0x4DC << DAISY_REG_SHIFT) | (1U << SION_BIT_SHIFT) | 2)},
{GPIO_AD_B1_07, I2C_3, ((2U << DAISY_REG_VALUE_SHIFT) | (0x4DC << DAISY_REG_SHIFT) | (1U << SION_BIT_SHIFT) | 1)},

{GPIO_EMC_12, I2C_4, ((0U << DAISY_REG_VALUE_SHIFT) | (0x4E4 << DAISY_REG_SHIFT) | (1U << SION_BIT_SHIFT) | 2)},
{GPIO_AD_B0_12, I2C_4, ((1U << DAISY_REG_VALUE_SHIFT) | (0x4E4 << DAISY_REG_SHIFT) | (1U << SION_BIT_SHIFT) | 0)},

{NC , NC , 0}
};
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