int main() { // Configure IO pins with default mode and selector TIMER_ISR::Init(); TIMER_TO_PROC1::Init(); PROC1::Init(); PROC2::Init(); PROC3::Init(); TIMER_HOOK::Init(); IDLE_HOOK::Init(); // Setup timer for TimerEvent generation // Timer 1, 25 MHz timer clock. // Interrupt rate slightly higher than 200 Hz for better scope view LPC_SC->PCONP |= CLKPWR_PCONP_PCTIM1; LPC_SC->PCLKSEL0 = (LPC_SC->PCLKSEL0 & ~(0x03 << CLKPWR_PCLKSEL_TIMER1)) | (CLKPWR_PCLKSEL_CCLK_DIV_4 << CLKPWR_PCLKSEL_TIMER1); LPC_TIM1->CTCR = 0; LPC_TIM1->PR = 0; LPC_TIM1->PC = 0; LPC_TIM1->TC = 0; LPC_TIM1->MR0 = SYSTICKFREQ / 4 / 200.4 - 1; LPC_TIM1->MCR = TIM_RESET_ON_MATCH(0) | TIM_INT_ON_MATCH(0); LPC_TIM1->EMR = TIM_EM_SET(0, TIM_EM_TOGGLE); LPC_TIM1->TCR = (1 << 0); NVIC->IP[ TIMER1_IRQn ] = 0x80; // Middle priority NVIC->ISER[0] = (1 << TIMER1_IRQn); // run OS::run(); }
/*********************************************************************//** * @brief Configuration for Match register * @param[in] TIMx Pointer to timer device * @param[in] TIM_MatchConfigStruct Pointer to TIM_MATCHCFG_Type * - MatchChannel : choose channel 0 or 1 * - IntOnMatch : if SET, interrupt will be generated when MRxx match * the value in TC * - StopOnMatch : if SET, TC and PC will be stopped whenM Rxx match * the value in TC * - ResetOnMatch : if SET, Reset on MR0 when MRxx match * the value in TC * -ExtMatchOutputType: Select output for external match * + 0: Do nothing for external output pin if match * + 1: Force external output pin to low if match * + 2: Force external output pin to high if match * + 3: Toggle external output pin if match * MatchValue: Set the value to be compared with TC value * @return None **********************************************************************/ void TIM_ConfigMatch(TIM_TypeDef *TIMx, TIM_MATCHCFG_Type *TIM_MatchConfigStruct) { CHECK_PARAM(PARAM_TIMx(TIMx)); CHECK_PARAM(PARAM_TIM_EXTMATCH_OPT(TIM_MatchConfigStruct->ExtMatchOutputType)); uint32_t timer = TIM_ConverPtrToTimeNum(TIMx) ; // TIMx->MR[TIM_MatchConfigStruct->MatchChannel] = TIM_MatchConfigStruct->MatchValue; switch(TIM_MatchConfigStruct->MatchChannel) { case 0: TIMx->MR0 = TIM_MatchConfigStruct->MatchValue; break; case 1: TIMx->MR1 = TIM_MatchConfigStruct->MatchValue; break; } //interrupt on MRn TIMx->MCR &=~TIM_MCR_CHANNEL_MASKBIT(TIM_MatchConfigStruct->MatchChannel); if (TIM_MatchConfigStruct->IntOnMatch) TIMx->MCR |= TIM_INT_ON_MATCH(TIM_MatchConfigStruct->MatchChannel); //reset on MRn if (TIM_MatchConfigStruct->ResetOnMatch) TIMx->MCR |= TIM_RESET_ON_MATCH(TIM_MatchConfigStruct->MatchChannel); //stop on MRn if (TIM_MatchConfigStruct->StopOnMatch) TIMx->MCR |= TIM_STOP_ON_MATCH(TIM_MatchConfigStruct->MatchChannel); // match output type TIMx->EMR &= ~TIM_EM_MASK(TIM_MatchConfigStruct->MatchChannel); TIMx->EMR = TIM_EM_SET(TIM_MatchConfigStruct->MatchChannel,TIM_MatchConfigStruct->ExtMatchOutputType); //pin output configuration if (TIM_MatchConfigStruct->ExtMatchOutputType >0) { if ((timer <2)&& (TIM_MatchConfigStruct->MatchChannel < 2)) { PINSEL_ConfigPin((PINSEL_CFG_Type *)&timer_match_pin[2*timer +TIM_MatchConfigStruct->MatchChannel]); } if ((timer ==2)) { PINSEL_ConfigPin( (PINSEL_CFG_Type *)&timer_match_pin[2*timer + TIM_MatchConfigStruct->MatchChannel]); } if ((timer ==3)&&(TIM_MatchConfigStruct->MatchChannel < 2)) { PINSEL_ConfigPin( (PINSEL_CFG_Type *)&timer_match_pin[4*timer + TIM_MatchConfigStruct->MatchChannel]); } } }
/*********************************************************************//** * @brief Configuration for Match register * @param[in] TIMx Pointer to timer device, should be: * - LPC_TIM0: TIMER0 peripheral * - LPC_TIM1: TIMER1 peripheral * - LPC_TIM2: TIMER2 peripheral * - LPC_TIM3: TIMER3 peripheral * @param[in] TIM_MatchConfigStruct Pointer to TIM_MATCHCFG_Type * - MatchChannel : choose channel 0 or 1 * - IntOnMatch : if SET, interrupt will be generated when MRxx match * the value in TC * - StopOnMatch : if SET, TC and PC will be stopped whenM Rxx match * the value in TC * - ResetOnMatch : if SET, Reset on MR0 when MRxx match * the value in TC * -ExtMatchOutputType: Select output for external match * + 0: Do nothing for external output pin if match * + 1: Force external output pin to low if match * + 2: Force external output pin to high if match * + 3: Toggle external output pin if match * MatchValue: Set the value to be compared with TC value * @return None **********************************************************************/ void TIM_ConfigMatch(LPC_TIM_TypeDef *TIMx, TIM_MATCHCFG_Type *TIM_MatchConfigStruct) { CHECK_PARAM(PARAM_TIMx(TIMx)); CHECK_PARAM(PARAM_TIM_EXTMATCH_OPT(TIM_MatchConfigStruct->ExtMatchOutputType)); switch(TIM_MatchConfigStruct->MatchChannel) { case 0: TIMx->MR0 = TIM_MatchConfigStruct->MatchValue; break; case 1: TIMx->MR1 = TIM_MatchConfigStruct->MatchValue; break; case 2: TIMx->MR2 = TIM_MatchConfigStruct->MatchValue; break; case 3: TIMx->MR3 = TIM_MatchConfigStruct->MatchValue; break; default: //Error match value //Error loop while(1); break; } //interrupt on MRn TIMx->MCR &=~TIM_MCR_CHANNEL_MASKBIT(TIM_MatchConfigStruct->MatchChannel); if (TIM_MatchConfigStruct->IntOnMatch) TIMx->MCR |= TIM_INT_ON_MATCH(TIM_MatchConfigStruct->MatchChannel); //reset on MRn if (TIM_MatchConfigStruct->ResetOnMatch) TIMx->MCR |= TIM_RESET_ON_MATCH(TIM_MatchConfigStruct->MatchChannel); //stop on MRn if (TIM_MatchConfigStruct->StopOnMatch) TIMx->MCR |= TIM_STOP_ON_MATCH(TIM_MatchConfigStruct->MatchChannel); // match output type TIMx->EMR &= ~TIM_EM_MASK(TIM_MatchConfigStruct->MatchChannel); TIMx->EMR |= TIM_EM_SET(TIM_MatchConfigStruct->MatchChannel,TIM_MatchConfigStruct->ExtMatchOutputType); }
/*********************************************************************//** * @brief Configuration for Match register * @param[in] TIMx Pointer to timer device * @param[in] TIM_MatchConfigStruct Pointer to TIM_MATCHCFG_Type * - MatchChannel : choose channel 0 or 1 * - IntOnMatch : if SET, interrupt will be generated when MRxx match * the value in TC * - StopOnMatch : if SET, TC and PC will be stopped whenM Rxx match * the value in TC * - ResetOnMatch : if SET, Reset on MR0 when MRxx match * the value in TC * -ExtMatchOutputType: Select output for external match * + 0: Do nothing for external output pin if match * + 1: Force external output pin to low if match * + 2: Force external output pin to high if match * + 3: Toggle external output pin if match * MatchValue: Set the value to be compared with TC value * @return None **********************************************************************/ void TIM_ConfigMatch(LPC_TIM_TypeDef *TIMx, TIM_MATCHCFG_Type *TIM_MatchConfigStruct) { uint32_t timer; CHECK_PARAM(PARAM_TIMx(TIMx)); CHECK_PARAM(PARAM_TIM_EXTMATCH_OPT(TIM_MatchConfigStruct->ExtMatchOutputType)); timer = TIM_ConverPtrToTimeNum(TIMx) ; switch(TIM_MatchConfigStruct->MatchChannel) { case 0: TIMx->MR0 = TIM_MatchConfigStruct->MatchValue; break; case 1: TIMx->MR1 = TIM_MatchConfigStruct->MatchValue; break; } //interrupt on MRn TIMx->MCR &=~TIM_MCR_CHANNEL_MASKBIT(TIM_MatchConfigStruct->MatchChannel); if (TIM_MatchConfigStruct->IntOnMatch) TIMx->MCR |= TIM_INT_ON_MATCH(TIM_MatchConfigStruct->MatchChannel); //reset on MRn if (TIM_MatchConfigStruct->ResetOnMatch) TIMx->MCR |= TIM_RESET_ON_MATCH(TIM_MatchConfigStruct->MatchChannel); //stop on MRn if (TIM_MatchConfigStruct->StopOnMatch) TIMx->MCR |= TIM_STOP_ON_MATCH(TIM_MatchConfigStruct->MatchChannel); // TIMx->MCR = 0x02; // match output type TIMx->EMR &= ~TIM_EM_MASK(TIM_MatchConfigStruct->MatchChannel); TIMx->EMR = TIM_EM_SET(TIM_MatchConfigStruct->MatchChannel,TIM_MatchConfigStruct->ExtMatchOutputType); }
int main () { //int i, j; // TIM_TIMERCFG_Type timer_config; // TIM_MATCHCFG_Type match_config; UART_CFG_Type cfg; UART_FIFO_CFG_Type UARTFIFOConfigStruct; /******************** GPIO **********************************/ SYSCON_AHBPeriphClockCmd(SYSCON_AHBPeriph_GPIO, ENABLE); GPIO_SetDir(PORT0, GPIO_Pin_7, 1); GPIO_SetDir(PORT3, GPIO_Pin_3, 0); IOCON_SetPinMode(IOCON_PIO3_3, PIN_MODE_PullUp); IOCON_SetPinMode(IOCON_PIO0_7, PIN_MODE_PullUp); /*************************************************************/ /******************* LCD ***********************************/ lcd_init(); lcd_string(" ** Flow Meter ** ", 1); /************************************************************/ /****************** 32 bit Counter ****************************/ IOCON_SetPinFunc(IOCON_PIO1_5, PIO1_5_FUN_CT32B0_CAP0); SYSCON_AHBPeriphClockCmd(SYSCON_AHBPeriph_CT32B0, ENABLE); LPC_TMR32B0->CTCR = (1<<0); // LPC_TMR32B0->TCR = (1<<1); // LPC_TMR32B0->TCR = (1<<0); /***************************************************************/ /****************** External Interrupt on GPIO *********************/ gpio_init_config (); GPIO_EventInit(&gpio_int_struct); GPIO_PortIntCmd(PORT3, ENABLE); /*******************************************************************/ /*************************** UART **************************************/ /* Assign UART Pins */ UART_PinsInit(); cfg.Baud_rate = 115200; cfg.Parity = UART_PARITY_NONE; cfg.Databits = UART_DATABIT_8; cfg.Stopbits = UART_STOPBIT_1; UART_FIFOConfigStructInit(&UARTFIFOConfigStruct); UART_Init(LPC_UART, &cfg); UART_FIFOConfig(LPC_UART, &UARTFIFOConfigStruct); /* Enable Transmit */ UART_TxCmd(LPC_UART,ENABLE); /************************************************************************/ /******************************** SPI *********************************/ DAC_SPI1_Config (); /***********************************************************************/ /************************ 32 Bit Timer1 ******************************/ NVIC_EnableIRQ(TIMER_32_1_IRQn); /* Configure Timer Prescale */ timer_config.PrescaleOption = TIM_PRESCALE_TICKVAL; /* We have a 48MHz clock, so a prescale of 48000 will mean the main timer ticks every millisecond. */ timer_config.PrescaleValue = 11999; /* Init! */ TIM_Init(LPC_TMR32B1, TIM_TIMER_MODE, &timer_config); /* COnfigure Timer Match */ /* Match on channel 0 */ match_config.MatchChannel = 0; /* Interrupt on match */ match_config.IntOnMatch = TIM_INT_ON_MATCH(0); /* Reset the timer on match */ match_config.ResetOnMatch = TIM_RESET_ON_MATCH(0); /* Match on a count of 75, so interrupt every 75 milliseconds */ match_config.MatchValue = 4000U; /* Config the match */ TIM_ConfigMatch(LPC_TMR32B1, &match_config); /* Clear the timer, and then start it */ TIM_Cmd(LPC_TMR32B1, TIM_RESET); TIM_Cmd(LPC_TMR32B1, TIM_ENABLE); /******************************************************************/ while(1) { // DAC_SPI1_Write(0x0E8B); // 3V //DAC_SPI1_Write(0x09b2); // 2V //DAC_SPI1_Write(0x04D9); // 1V //UART_Send(LPC_UART, (uint8_t *)"Hello, World!\n", sizeof("Hello, World!\n") - 1, NONE_BLOCKING); //_delay_ms(1000); Flow_Uart_Send (1, 5); _delay_ms(1); Flow_Uart_Send (20, 5); _delay_ms(1); Flow_Uart_Send (300, 5); _delay_ms(1); Flow_Uart_Send (4000, 5); _delay_ms(1); Flow_Uart_Send (50000, 5); //idle } }