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Initialize some pins to VDDIOH on MAX78002EVKIT, MSDK-927 #406

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merged 3 commits into from
Feb 24, 2023
Merged

Initialize some pins to VDDIOH on MAX78002EVKIT, MSDK-927 #406

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721b3af
Initialize some pins to VDDIOH on MAX78002EVKIT, MSDK-927
Jake-Carter Feb 10, 2023
5ccdb74
clang-format
Jake-Carter Feb 17, 2023
d9b55bf
Fix comment typo
Jake-Carter Feb 24, 2023
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14 changes: 14 additions & 0 deletions Libraries/Boards/MAX78002/EvKit_V1/Source/board.c
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Original file line number Diff line number Diff line change
Expand Up @@ -60,6 +60,14 @@ const mxc_gpio_cfg_t led_pin[] = {
};
const unsigned int num_leds = (sizeof(led_pin) / sizeof(mxc_gpio_cfg_t));

// The following pins are pulled up to 3V3 via external resistors on the AI87 EVKIT,
// and therefore must be initialized to VDDIOH to prevent current injection into VDDIO/VDDA
// in standby, backup, and powerdown modes.
const uint32_t _port0_vddioh_mask = MXC_GPIO_PIN_0;
const uint32_t _port1_vddioh_mask = (MXC_GPIO_PIN_10 | MXC_GPIO_PIN_11 | MXC_GPIO_PIN_12 |
MXC_GPIO_PIN_13 | MXC_GPIO_PIN_14 | MXC_GPIO_PIN_16);
const uint32_t _port2_vddioh_mask = MXC_GPIO_PIN_2;

// TFT Data/Command pin
const mxc_gpio_cfg_t tft_dc_pin = { TFT_DC_PORT, TFT_DC_PIN, MXC_GPIO_FUNC_OUT, MXC_GPIO_PAD_NONE,
MXC_GPIO_VSSEL_VDDIOH };
Expand Down Expand Up @@ -292,6 +300,12 @@ int Board_Init(void)
MXC_SYS_ClockEnable(MXC_SYS_PERIPH_CLOCK_GPIO1);
MXC_SYS_ClockEnable(MXC_SYS_PERIPH_CLOCK_GPIO2);

// Set VSSEL to VDDIOH for any pins that are pulled
// up to 3V3 on the EVKIT.
MXC_GPIO_SetVSSEL(MXC_GPIO0, MXC_GPIO_VSSEL_VDDIOH, _port0_vddioh_mask);
MXC_GPIO_SetVSSEL(MXC_GPIO1, MXC_GPIO_VSSEL_VDDIOH, _port1_vddioh_mask);
MXC_GPIO_SetVSSEL(MXC_GPIO2, MXC_GPIO_VSSEL_VDDIOH, _port2_vddioh_mask);

if ((err = Console_Init()) < E_NO_ERROR) {
return err;
}
Expand Down