#include "board.h" #include "chip.h" #define GPIO_PINRXD0 //MAX: D0 #define GPIO_PINTXD19 //MAX: D2 #define UART_BAUDRATE 115200 bool flag_MRT0 = false; bool setPowerState(int power_state){ uint32_t response; uint32_t cmdData[3]; cmdData[0] = 12; cmdData[1] = power_state; cmdData[2] = 12; Chip_Clock_SetMainClockSource(SYSCTL_MAINCLKSRC_IRC); SystemCoreClockUpdate(); __disable_irq(); LPC_ROM_API->pPWRD->set_power(cmdData, &response); __enable_irq(); if(response) return false; return true; } static void setupMRT(uint8_t ch, MRT_MODE_T mode, uint32_t rate) { LPC_MRT_CH_T *pMRT; /* Get pointer to timer selected by ch */ pMRT = Chip_MRT_GetRegPtr(ch); /* Setup timer with rate based on MRT clock */ Chip_MRT_SetInterval(pMRT, (Chip_Clock_GetSystemClockRate() / rate) | MRT_INTVAL_LOAD); /* Timer mode */ Chip_MRT_SetMode(pMRT, mode); /* Clear pending interrupt and enable timer */ Chip_MRT_IntClear(pMRT); Chip_MRT_SetEnabled(pMRT); } /** * @briefHandle interrupt from MRT * @returnNothing */ void MRT_IRQHandler(void) { uint32_t int_pend; /* Get interrupt pending status for all timers and clear it*/ int_pend = Chip_MRT_GetIntPending(); Chip_MRT_ClearIntPending(int_pend); /* MRT 0 */ if (int_pend & (MRTn_INTFLAG(0))) { flag_MRT0 = true; } } static void blinkLEDCount(uint32_t count) { volatile uint32_t index; /* Perform the requested number of times */ for (; count; --count) { Board_LED_Toggle(0); for (index = 0; index < 100000; ++index) {}/* delay */ Board_LED_Toggle(0); for (index = 0; index < 100000; ++index) {}/* delay */ } } void UART_config_Init(){ /* Enable the clock to the Switch Matrix */ Chip_Clock_EnablePeriphClock(SYSCTL_CLOCK_SWM); // Change pin to UARTn function Chip_SWM_MovablePinAssign(SWM_U0_TXD_O, GPIO_PINTXD); Chip_SWM_MovablePinAssign(SWM_U0_RXD_I, GPIO_PINRXD); /* Disable the clock to the Switch Matrix */ Chip_Clock_DisablePeriphClock(SYSCTL_CLOCK_SWM); /* Setup UARTn */ Chip_UART_Init(LPC_USART0); Chip_UART_ConfigData(LPC_USART0, UART_CFG_DATALEN_8 | UART_CFG_PARITY_NONE | UART_CFG_STOPLEN_1); Chip_Clock_SetUSARTNBaseClockRate((UART_BAUDRATE * 16), true); Chip_UART_SetBaud(LPC_USART0, UART_BAUDRATE); Chip_UART_Enable(LPC_USART0); Chip_UART_TXEnable(LPC_USART0); } int main(void) { int mrtch; /* Generic Initialization */ SystemCoreClockUpdate(); Board_Init(); /* Set power state */ /* if failure response don't proceed */ if (!setPowerState(PWR_CPU_PERFORMANCE)) { while (1) { blinkLEDCount(2); } } /* Config and Init UART0 */ UART_config_Init(); Chip_MRT_Init(); for (mrtch = 0; mrtch < MRT_CHANNELS_NUM; mrtch++) { Chip_MRT_SetDisabled(Chip_MRT_GetRegPtr(mrtch)); } /* Enable the interrupt for the MRT */ NVIC_EnableIRQ(MRT_IRQn); flag_MRT0 = false; setupMRT(0, MRT_MODE_ONESHOT, 500); while(!flag_MRT0) __WFI(); Chip_UART_SendBlocking(LPC_USART0, "go\r\n", 4); while ( 1 ) { } }
