//*****************************************************************************
//! Board Initialization & Configuration
//*****************************************************************************
static void bootmgr_board_init(void) {
// set the vector table base
MAP_IntVTableBaseSet((unsigned long)&g_pfnVectors[0]);
// enable processor interrupts
MAP_IntMasterEnable();
MAP_IntEnable(FAULT_SYSTICK);
// mandatory MCU initialization
PRCMCC3200MCUInit();
mperror_bootloader_check_reset_cause();
#if MICROPY_HW_ANTENNA_DIVERSITY
// configure the antenna selection pins
antenna_init0();
#endif
// enable the data hashing engine
CRYPTOHASH_Init();
// init the system led and the system switch
mperror_init0();
// clear the safe boot flag, since we can't trust its content after reset
PRCMClearSafeBootRequest();
}
//*****************************************************************************
//! Board Initialization & Configuration
//*****************************************************************************
static void bootmgr_board_init(void) {
// set the vector table base
MAP_IntVTableBaseSet((unsigned long)&g_pfnVectors[0]);
// enable processor interrupts
MAP_IntMasterEnable();
MAP_IntEnable(FAULT_SYSTICK);
// mandatory MCU initialization
PRCMCC3200MCUInit();
// clear all the special bits, since we can't trust their content after reset
// except for the WDT reset one!!
PRCMClearSpecialBit(PRCM_SAFE_BOOT_BIT);
PRCMClearSpecialBit(PRCM_FIRST_BOOT_BIT);
// check the reset after clearing the special bits
mperror_bootloader_check_reset_cause();
#if MICROPY_HW_ANTENNA_DIVERSITY
// configure the antenna selection pins
antenna_init0();
#endif
// enable the data hashing engine
CRYPTOHASH_Init();
// init the system led and the system switch
mperror_init0();
}
int main (void) {
// Initialize the clocks and the interrupt system
HAL_SystemInit();
#if MICROPY_HW_ANTENNA_DIVERSITY
// configure the antenna selection pins
antenna_init0();
#endif
// Init the watchdog
pybwdt_init0();
#ifndef DEBUG
OsiTaskHandle mpTaskHandle;
#endif
mpTaskHandle = xTaskCreateStatic(TASK_Micropython, "MicroPy",
MICROPY_TASK_STACK_LEN, NULL, MICROPY_TASK_PRIORITY, mpTaskStack, &mpTaskTCB);
ASSERT(mpTaskHandle != NULL);
osi_start();
for ( ; ; );
}
void pyb_sleep_suspend_exit (void) {
// take the I2C semaphore
uint32_t reg = HWREG(COMMON_REG_BASE + COMMON_REG_O_I2C_Properties_Register);
reg = (reg & ~0x3) | 0x1;
HWREG(COMMON_REG_BASE + COMMON_REG_O_I2C_Properties_Register) = reg;
// take the GPIO semaphore
reg = HWREG(COMMON_REG_BASE + COMMON_REG_O_GPIO_properties_register);
reg = (reg & ~0x3FF) | 0x155;
HWREG(COMMON_REG_BASE + COMMON_REG_O_GPIO_properties_register) = reg;
// restore de NVIC control registers
HWREG(NVIC_VTABLE) = nvic_reg_store->vector_table;
HWREG(NVIC_ACTLR) = nvic_reg_store->aux_ctrl;
HWREG(NVIC_INT_CTRL) = nvic_reg_store->int_ctrl_state;
HWREG(NVIC_APINT) = nvic_reg_store->app_int;
HWREG(NVIC_SYS_CTRL) = nvic_reg_store->sys_ctrl;
HWREG(NVIC_CFG_CTRL) = nvic_reg_store->config_ctrl;
HWREG(NVIC_SYS_PRI1) = nvic_reg_store->sys_pri_1;
HWREG(NVIC_SYS_PRI2) = nvic_reg_store->sys_pri_2;
HWREG(NVIC_SYS_PRI3) = nvic_reg_store->sys_pri_3;
HWREG(NVIC_SYS_HND_CTRL) = nvic_reg_store->sys_hcrs;
// restore the systick register
HWREG(NVIC_ST_CTRL) = nvic_reg_store->systick_ctrl;
HWREG(NVIC_ST_RELOAD) = nvic_reg_store->systick_reload;
HWREG(NVIC_ST_CAL) = nvic_reg_store->systick_calib;
// restore the interrupt priority registers
uint32_t *base_reg_addr = (uint32_t *)NVIC_PRI0;
for (uint32_t i = 0; i < (sizeof(nvic_reg_store->int_priority) / 4); i++) {
base_reg_addr[i] = nvic_reg_store->int_priority[i];
}
// restore the interrupt enable registers
base_reg_addr = (uint32_t *)NVIC_EN0;
for(uint32_t i = 0; i < (sizeof(nvic_reg_store->int_en) / 4); i++) {
base_reg_addr[i] = nvic_reg_store->int_en[i];
}
HAL_INTRODUCE_SYNC_BARRIER();
// ungate the clock to the shared spi bus
MAP_PRCMPeripheralClkEnable(PRCM_SSPI, PRCM_RUN_MODE_CLK | PRCM_SLP_MODE_CLK);
#if MICROPY_HW_ANTENNA_DIVERSITY
// re-configure the antenna selection pins
antenna_init0();
#endif
// reinitialize simplelink's interface
sl_IfOpen (NULL, 0);
// restore the configuration of all active peripherals
pyb_sleep_obj_wakeup();
// reconfigure all the previously enabled interrupts
mp_irq_wake_all();
// we need to init the crypto hash engine again
//CRYPTOHASH_Init();
// trigger a sw interrupt
MAP_IntPendSet(INT_PRCM);
// force an exception to go back to the point where suspend mode was entered
nlr_raise(mp_obj_new_exception(&mp_type_SystemExit));
}