/*---------------------------------------------------------------------------*/
void
board_init()
{
/* Disable global interrupts */
uint8_t int_disabled = ti_lib_int_master_disable();
power_domains_on();
/* Configure all clock domains to run at full speed */
ti_lib_prcm_clock_configure_set(PRCM_DOMAIN_SYSBUS, PRCM_CLOCK_DIV_1);
ti_lib_prcm_clock_configure_set(PRCM_DOMAIN_CPU, PRCM_CLOCK_DIV_1);
ti_lib_prcm_clock_configure_set(PRCM_DOMAIN_TIMER, PRCM_CLOCK_DIV_1);
ti_lib_prcm_clock_configure_set(PRCM_DOMAIN_SERIAL, PRCM_CLOCK_DIV_1);
ti_lib_prcm_clock_configure_set(PRCM_DOMAIN_PERIPH, PRCM_CLOCK_DIV_1);
/* Enable GPIO peripheral */
ti_lib_prcm_peripheral_run_enable(PRCM_PERIPH_GPIO);
/* Apply settings and wait for them to take effect */
ti_lib_prcm_load_set();
while(!ti_lib_prcm_load_get());
/* Enable GPT0 module - Wait for the clock to be enabled */
ti_lib_prcm_peripheral_run_enable(PRCM_PERIPH_TIMER0);
ti_lib_prcm_load_set();
while(!ti_lib_prcm_load_get());
/* Keys (input pullup) */
ti_lib_rom_ioc_pin_type_gpio_input(BOARD_IOID_KEY_LEFT);
ti_lib_rom_ioc_pin_type_gpio_input(BOARD_IOID_KEY_RIGHT);
ti_lib_ioc_io_port_pull_set(BOARD_IOID_KEY_LEFT, IOC_IOPULL_UP);
ti_lib_ioc_io_port_pull_set(BOARD_IOID_KEY_RIGHT, IOC_IOPULL_UP);
/* I2C controller */
board_i2c_init();
/* Sensor interface */
ti_lib_rom_ioc_pin_type_gpio_input(BOARD_IOID_MPU_INT);
ti_lib_ioc_io_port_pull_set(BOARD_IOID_MPU_INT, IOC_IOPULL_DOWN);
ti_lib_rom_ioc_pin_type_gpio_input(BOARD_IOID_REED_RELAY);
ti_lib_ioc_io_port_pull_set(BOARD_IOID_REED_RELAY, IOC_IOPULL_DOWN);
ti_lib_rom_ioc_pin_type_gpio_output(BOARD_IOID_MPU_POWER);
/* Flash interface */
ti_lib_rom_ioc_pin_type_gpio_output(BOARD_IOID_FLASH_CS);
ti_lib_gpio_pin_write(BOARD_FLASH_CS, 1);
buzzer_init();
lpm_register_module(&sensortag_module);
/* Re-enable interrupt if initially enabled. */
if(!int_disabled) {
ti_lib_int_master_enable();
}
}
/**
* \brief Configuration function for the button sensor for all buttons.
*
* \param type This function does nothing unless type == SENSORS_ACTIVE
* \param c 0: disable the button, non-zero: enable
* \param key: One of BOARD_KEY_LEFT, BOARD_KEY_RIGHT etc
*/
static void
config_buttons(int type, int c, uint32_t key)
{
switch(type) {
case SENSORS_HW_INIT:
ti_lib_gpio_clear_event_dio(key);
ti_lib_rom_ioc_pin_type_gpio_input(key);
ti_lib_rom_ioc_port_configure_set(key, IOC_PORT_GPIO, BUTTON_GPIO_CFG);
gpio_interrupt_register_handler(key, button_press_handler);
break;
case SENSORS_ACTIVE:
if(c) {
ti_lib_gpio_clear_event_dio(key);
ti_lib_rom_ioc_pin_type_gpio_input(key);
ti_lib_rom_ioc_port_configure_set(key, IOC_PORT_GPIO, BUTTON_GPIO_CFG);
ti_lib_rom_ioc_int_enable(key);
} else {
ti_lib_rom_ioc_int_disable(key);
}
break;
default:
break;
}
}
/**
* \brief Configuration function for the MPU9250 sensor.
*
* \param type Activate, enable or disable the sensor. See below
* \param enable
*
* When type == SENSORS_HW_INIT we turn on the hardware
* When type == SENSORS_ACTIVE and enable==1 we enable the sensor
* When type == SENSORS_ACTIVE and enable==0 we disable the sensor
*/
static int
configure(int type, int enable)
{
switch(type) {
case SENSORS_HW_INIT:
ti_lib_rom_ioc_pin_type_gpio_input(BOARD_IOID_MPU_INT);
ti_lib_ioc_io_port_pull_set(BOARD_IOID_MPU_INT, IOC_IOPULL_DOWN);
ti_lib_ioc_io_hyst_set(BOARD_IOID_MPU_INT, IOC_HYST_ENABLE);
ti_lib_rom_ioc_pin_type_gpio_output(BOARD_IOID_MPU_POWER);
ti_lib_ioc_io_drv_strength_set(BOARD_IOID_MPU_POWER, IOC_CURRENT_4MA,
IOC_STRENGTH_MAX);
ti_lib_gpio_clear_dio(BOARD_IOID_MPU_POWER);
elements = MPU_9250_SENSOR_TYPE_NONE;
break;
case SENSORS_ACTIVE:
if(((enable & MPU_9250_SENSOR_TYPE_ACC) != 0) ||
((enable & MPU_9250_SENSOR_TYPE_GYRO) != 0)) {
PRINTF("MPU: Enabling\n");
elements = enable & MPU_9250_SENSOR_TYPE_ALL;
power_up();
state = SENSOR_STATE_BOOTING;
} else {
PRINTF("MPU: Disabling\n");
if(HWREG(GPIO_BASE + GPIO_O_DOUT31_0) & BOARD_MPU_POWER) {
/* Then check our state */
elements = MPU_9250_SENSOR_TYPE_NONE;
ctimer_stop(&startup_timer);
sensor_sleep();
while(ti_lib_i2c_master_busy(I2C0_BASE));
state = SENSOR_STATE_DISABLED;
ti_lib_gpio_clear_dio(BOARD_IOID_MPU_POWER);
}
}
break;
default:
break;
}
return state;
}
