hardware.c

#include "epicardium.h"

#include "api/dispatcher.h"
#include "api/interrupt-sender.h"
#include "usb/epc_usb.h"
#include "modules/filesystem.h"
#include "modules/log.h"
#include "modules/modules.h"
#include "modules/stream.h"

#include "card10.h"
#include "display.h"
#include "leds.h"
#include "pb.h"
#include "pmic.h"
#include "portexpander.h"

#include "gpio.h"
#include "i2c.h"
#include "rtc.h"
#include "spi.h"
#include "trng.h"
#include "wdt.h"

/*
 * Early init is called at the very beginning and is meant for modules which
 * absolutely need to start as soon as possible.  hardware_early_init() blocks
 * which means code in here should be fast.
 */
int hardware_early_init(void)
{
	/*
	 * Watchdog timer
	 */
	watchdog_init();

	/*
	 * I2C bus for onboard peripherals (ie. PMIC, BMA400, BHI160, BME680,
	 * ...)
	 */
	I2C_Shutdown(MXC_I2C1_BUS0);
	I2C_Init(MXC_I2C1_BUS0, I2C_FAST_MODE, NULL);

#ifndef CARD10_DEBUG_CORE1
	/*
	 * SAO I2C bus
	 */
	I2C_Shutdown(MXC_I2C0_BUS0);
	I2C_Init(MXC_I2C0_BUS0, I2C_FAST_MODE, NULL);
#endif

	/*
	 * GPIO peripheral.
	 */
	GPIO_Init();

	/* Set the power hold pin, so the PMIC does not turn off again */
	const gpio_cfg_t pwr_hold_pin = {
		PORT_0, PIN_30, GPIO_FUNC_OUT, GPIO_PAD_NONE
	};
	GPIO_Config(&pwr_hold_pin);
	GPIO_OutSet(&pwr_hold_pin);

	/*
	 * PMIC (MAX77650)
	 */
	pmic_init();
	pmic_set_led(0, 0);
	pmic_set_led(1, 0);
	pmic_set_led(2, 0);