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mtb-example-xmc-ccu8-sync-start/main.c
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| /****************************************************************************** | |
| * File Name: main.c | |
| * | |
| * Description: This is the source code for the XMC MCU: CCU8 Timer synchronous | |
| * start Example for ModusToolbox. | |
| * | |
| * Related Document: See README.md | |
| * | |
| ****************************************************************************** | |
| * | |
| * $ Copyright 2015-2022 Infineon Technologies AG $ | |
| * | |
| *****************************************************************************/ | |
| #include "cybsp.h" | |
| #include "cy_utils.h" | |
| #include <stdio.h> | |
| #include "cy_retarget_io.h" | |
| /******************************************************************************* | |
| * Macros | |
| *******************************************************************************/ | |
| /*Define macros for XMC13x Boot kit*/ | |
| #if (UC_SERIES == XMC13) | |
| #define INTERRUPT_PRIORITY_NODE_ID ERU0_0_IRQn | |
| #define INTERRUPT_EVENT_PRIORITY (3U) | |
| #define ERU_EXTERNAL_EVENT_HANDLER ERU0_0_IRQHandler | |
| #define TIMER_0_PERIOD_MATCH_EVENT_PRIORITY 3 | |
| #define TIMER_1_PERIOD_MATCH_EVENT_PRIORITY 3 | |
| #define TIMER_0_PERIOD_MATCH_EVENT_HANDLER CCU80_SR0_INTERRUPT_HANDLER | |
| #define TIMER_0_PERIOD_MATCH_EVENT_IRQN CCU80_SR0_IRQN | |
| #define TIMER_1_PERIOD_MATCH_EVENT_HANDLER CCU80_SR1_INTERRUPT_HANDLER | |
| #define TIMER_1_PERIOD_MATCH_EVENT_IRQN CCU80_SR1_IRQN | |
| #endif | |
| /*Define macros for XMC14x Boot kit*/ | |
| #if (UC_SERIES == XMC14) | |
| #define INTERRUPT_PRIORITY_NODE_ID IRQ3_IRQn | |
| #define INTERRUPT_EVENT_PRIORITY (3U) | |
| #define ERU_EXTERNAL_EVENT_HANDLER IRQ_Hdlr_3 | |
| #define TIMER_0_PERIOD_MATCH_EVENT_PRIORITY 3 | |
| #define TIMER_1_PERIOD_MATCH_EVENT_PRIORITY 3 | |
| #define TIMER_0_PERIOD_MATCH_EVENT_HANDLER CCU80_SR0_INTERRUPT_HANDLER | |
| #define TIMER_0_PERIOD_MATCH_EVENT_IRQN CCU80_SR0_IRQN | |
| #define TIMER_1_PERIOD_MATCH_EVENT_HANDLER CCU81_SR0_INTERRUPT_HANDLER | |
| #define TIMER_1_PERIOD_MATCH_EVENT_IRQN CCU81_SR0_IRQN | |
| #endif | |
| /*Define macros for XMC42x Relax kit*/ | |
| #if (UC_SERIES == XMC42) | |
| #define INTERRUPT_PRIORITY_NODE_ID ERU1_0_IRQn | |
| #define INTERRUPT_EVENT_PRIORITY (63U) | |
| #define ERU_EXTERNAL_EVENT_HANDLER ERU1_0_IRQHandler | |
| #define TIMER_0_PERIOD_MATCH_EVENT_PRIORITY 61 | |
| #define TIMER_1_PERIOD_MATCH_EVENT_PRIORITY 61 | |
| #define TIMER_0_PERIOD_MATCH_EVENT_HANDLER CCU80_SR0_INTERRUPT_HANDLER | |
| #define TIMER_0_PERIOD_MATCH_EVENT_IRQN CCU80_SR0_IRQN | |
| #define TIMER_1_PERIOD_MATCH_EVENT_HANDLER CCU80_SR1_INTERRUPT_HANDLER | |
| #define TIMER_1_PERIOD_MATCH_EVENT_IRQN CCU80_SR1_IRQN | |
| #endif | |
| /*Define macros for XMC43x Relax kit*/ | |
| #if (UC_SERIES == XMC43) | |
| #define INTERRUPT_PRIORITY_NODE_ID ERU0_0_IRQn | |
| #define INTERRUPT_EVENT_PRIORITY (63U) | |
| #define ERU_EXTERNAL_EVENT_HANDLER ERU0_0_IRQHandler | |
| #define TIMER_0_PERIOD_MATCH_EVENT_PRIORITY 61 | |
| #define TIMER_1_PERIOD_MATCH_EVENT_PRIORITY 61 | |
| #define TIMER_0_PERIOD_MATCH_EVENT_HANDLER CCU80_SR0_INTERRUPT_HANDLER | |
| #define TIMER_0_PERIOD_MATCH_EVENT_IRQN CCU80_SR0_IRQN | |
| #define TIMER_1_PERIOD_MATCH_EVENT_HANDLER CCU80_SR1_INTERRUPT_HANDLER | |
| #define TIMER_1_PERIOD_MATCH_EVENT_IRQN CCU80_SR1_IRQN | |
| #endif | |
| /*Definition of macros for XMC45x, XMC47x, XMC48x Relax kit, XMC44x kit */ | |
| #if (UC_SERIES == XMC44) || (UC_SERIES == XMC45) || \ | |
| (UC_SERIES == XMC47) || (UC_SERIES == XMC48) | |
| #define INTERRUPT_PRIORITY_NODE_ID ERU1_0_IRQn | |
| #define INTERRUPT_EVENT_PRIORITY (63U) | |
| #define ERU_EXTERNAL_EVENT_HANDLER IRQ_Hdlr_5 | |
| #define TIMER_0_PERIOD_MATCH_EVENT_PRIORITY 61 | |
| #define TIMER_1_PERIOD_MATCH_EVENT_PRIORITY 61 | |
| #define TIMER_0_PERIOD_MATCH_EVENT_HANDLER CCU80_SR1_INTERRUPT_HANDLER | |
| #define TIMER_0_PERIOD_MATCH_EVENT_IRQN CCU80_SR1_IRQN | |
| #define TIMER_1_PERIOD_MATCH_EVENT_HANDLER CCU81_SR1_INTERRUPT_HANDLER | |
| #define TIMER_1_PERIOD_MATCH_EVENT_IRQN CCU81_SR1_IRQN | |
| #endif | |
| /* Define macro to enable/disable printing of debug messages */ | |
| #define ENABLE_XMC_DEBUG_PRINT (0) | |
| /* Define macro to check if loop is entered once */ | |
| #if ENABLE_XMC_DEBUG_PRINT | |
| static bool ENTER_LOOP1 = false; | |
| static bool ENTER_LOOP2 = false; | |
| #endif | |
| /******************************************************************************* | |
| * Global Variables | |
| *******************************************************************************/ | |
| static volatile bool timer0_interrupt_flag = false; | |
| static volatile bool timer1_interrupt_flag = false; | |
| /******************************************************************************* | |
| * Function Name: TIMER_0_PERIOD_MATCH_EVENT_HANDLER | |
| ******************************************************************************** | |
| * Summary: | |
| * This is the interrupt handler function for the CCU8 timer period match interrupt. | |
| * | |
| * Parameters: | |
| * void | |
| * | |
| * Return: | |
| * void | |
| * | |
| *******************************************************************************/ | |
| void TIMER_0_PERIOD_MATCH_EVENT_HANDLER(void) | |
| { | |
| timer0_interrupt_flag = true; | |
| } | |
| /******************************************************************************* | |
| * Function Name: TIMER_1_PERIOD_MATCH_EVENT_HANDLER | |
| ******************************************************************************** | |
| * Summary: | |
| * This is the interrupt handler function for the CCU81 timer period match interrupt. | |
| * | |
| * Parameters: | |
| * void | |
| * | |
| * Return: | |
| * void | |
| * | |
| *******************************************************************************/ | |
| void TIMER_1_PERIOD_MATCH_EVENT_HANDLER(void) | |
| { | |
| timer1_interrupt_flag = true; | |
| } | |
| /******************************************************************************* | |
| * Function Name: configure_eru | |
| ******************************************************************************** | |
| * Summary: | |
| * This is the function which initializes all the parameters needed for the ERU. | |
| * | |
| * Parameters: | |
| * void | |
| * | |
| * Return: | |
| * void | |
| * | |
| *******************************************************************************/ | |
| void configure_eru(void) | |
| { | |
| #if (UC_SERIES == XMC13) || (UC_SERIES == XMC14) | |
| /*Set Priority for IRQ*/ | |
| NVIC_SetPriority(INTERRUPT_PRIORITY_NODE_ID, INTERRUPT_EVENT_PRIORITY); | |
| #endif | |
| #if (UC_SERIES == XMC42) || (UC_SERIES == XMC43) || (UC_SERIES == XMC44) || (UC_SERIES == XMC45) || (UC_SERIES == XMC47) || (UC_SERIES == XMC48) | |
| /*Set Priority for IRQ*/ | |
| NVIC_SetPriority(INTERRUPT_PRIORITY_NODE_ID, NVIC_EncodePriority(NVIC_GetPriorityGrouping(), INTERRUPT_EVENT_PRIORITY, 0)); | |
| #endif | |
| /*Enable the Interrupt*/ | |
| NVIC_EnableIRQ(INTERRUPT_PRIORITY_NODE_ID); | |
| } | |
| /******************************************************************************* | |
| * Function Name: configure_timer0_interrupt | |
| ******************************************************************************** | |
| * Summary: | |
| * This is the function which configures the parameters needed for the interrupt that | |
| * will be generated by the period match of the CCU80 timer. | |
| * | |
| * Parameters: | |
| * void | |
| * | |
| * Return: | |
| * void | |
| * | |
| *******************************************************************************/ | |
| void configure_timer0_interrupt(void) | |
| { | |
| #if (UC_SERIES == XMC13) || (UC_SERIES == XMC14) | |
| NVIC_SetPriority(TIMER_0_PERIOD_MATCH_EVENT_IRQN, TIMER_0_PERIOD_MATCH_EVENT_PRIORITY); | |
| #endif | |
| #if (UC_SERIES == XMC42) || (UC_SERIES == XMC43) || (UC_SERIES == XMC44) || (UC_SERIES == XMC45) || (UC_SERIES == XMC47) || (UC_SERIES == XMC48) | |
| /*Set Interrupt priority by encoding the priority in the required groups*/ | |
| NVIC_SetPriority(TIMER_0_PERIOD_MATCH_EVENT_IRQN, NVIC_EncodePriority(NVIC_GetPriorityGrouping(), TIMER_0_PERIOD_MATCH_EVENT_PRIORITY, 0)); | |
| #endif | |
| /*Enable IRQ*/ | |
| NVIC_EnableIRQ(TIMER_0_PERIOD_MATCH_EVENT_IRQN); | |
| } | |
| /******************************************************************************* | |
| * Function Name: configure_timer1_interrupt | |
| ******************************************************************************** | |
| * Summary: | |
| * This is the function which configures the parameters needed for the interrupt that | |
| * will be generated by the period match of the CCU81 timer. | |
| * | |
| * Parameters: | |
| * void | |
| * | |
| * Return: | |
| * void | |
| * | |
| *******************************************************************************/ | |
| void configure_timer1_interrupt(void) | |
| { | |
| #if (UC_SERIES == XMC13) || (UC_SERIES == XMC14) | |
| NVIC_SetPriority(TIMER_1_PERIOD_MATCH_EVENT_IRQN, TIMER_1_PERIOD_MATCH_EVENT_PRIORITY); | |
| #endif | |
| #if (UC_SERIES == XMC42) || (UC_SERIES == XMC43) || (UC_SERIES == XMC44) || (UC_SERIES == XMC45) || (UC_SERIES == XMC47) || (UC_SERIES == XMC48) | |
| /*Set Interrupt priority by encoding the priority in the required groups*/ | |
| NVIC_SetPriority(TIMER_1_PERIOD_MATCH_EVENT_IRQN, NVIC_EncodePriority(NVIC_GetPriorityGrouping(), TIMER_1_PERIOD_MATCH_EVENT_PRIORITY, 0)); | |
| #endif | |
| /*Enable IRQ*/ | |
| NVIC_EnableIRQ(TIMER_1_PERIOD_MATCH_EVENT_IRQN); | |
| } | |
| /******************************************************************************* | |
| * Function Name: ERU_EXTERNAL_EVENT_HANDLER | |
| ******************************************************************************** | |
| * Summary: | |
| * This is the interrupt handler function for the ERU external interrupt which starts | |
| * the CCU8 timers and configures their respective interrupts for the toggling of LED's | |
| * | |
| * Parameters: | |
| * void | |
| * | |
| * Return: | |
| * void | |
| * | |
| *******************************************************************************/ | |
| void ERU_EXTERNAL_EVENT_HANDLER(void) | |
| { | |
| /*Configures the timers to receive the interrupts*/ | |
| configure_timer0_interrupt(); | |
| configure_timer1_interrupt(); | |
| } | |
| /******************************************************************************* | |
| * Function Name: main | |
| ******************************************************************************** | |
| * Summary: | |
| * This is the main function.It sets up a CCU8 timers to period match interrupt. | |
| * The main while loop checks for the elapsed time due to CCU8 timers period match | |
| * event and toggles 2 LEDs at approximately 0.5Hz. | |
| * | |
| * Parameters: | |
| * void | |
| * | |
| * Return: | |
| * int | |
| * | |
| *******************************************************************************/ | |
| int main(void) | |
| { | |
| cy_rslt_t result; | |
| /*Initialize the device and board peripherals*/ | |
| result = cybsp_init(); | |
| if (result != CY_RSLT_SUCCESS) | |
| { | |
| CY_ASSERT(0); | |
| } | |
| #if (UC_SERIES == XMC42) || (UC_SERIES == XMC43) || (UC_SERIES == XMC44) || (UC_SERIES == XMC45) || (UC_SERIES == XMC47) || (UC_SERIES == XMC48) | |
| /*The USER leds on the 4700 kit are active high. The User LED2 is turned on here */ | |
| XMC_GPIO_SetOutputHigh(CYBSP_USER_LED2_PORT, CYBSP_USER_LED2_PIN); | |
| #endif | |
| #if (UC_SERIES == XMC13) || (UC_SERIES == XMC14) | |
| /*The USER leds on the 1400 kit are active low. The User LED2 is turned on here */ | |
| XMC_GPIO_SetOutputLow(CYBSP_USER_LED2_PORT, CYBSP_USER_LED2_PIN); | |
| #endif | |
| /*Serial communication initialization function*/ | |
| cy_retarget_io_init(CYBSP_DEBUG_UART_HW); | |
| #if ENABLE_XMC_DEBUG_PRINT | |
| printf("Configuration initialization complete\r\n"); | |
| #endif | |
| /*Configures the Event Register Unit*/ | |
| configure_eru(); | |
| #if ENABLE_XMC_DEBUG_PRINT | |
| printf("ERU Configured\r\n"); | |
| #endif | |
| /*Infinite loop*/ | |
| while (1) | |
| { | |
| /*Check if timer elapsed (interrupt fired) and toggle the LED*/ | |
| if (timer0_interrupt_flag) | |
| { | |
| /*Clear the timer 0 interrupt flag */ | |
| timer0_interrupt_flag = false; | |
| /* Toggle the USER LED state */ | |
| XMC_GPIO_ToggleOutput(CYBSP_USER_LED1_PORT, CYBSP_USER_LED1_PIN); | |
| #if ENABLE_XMC_DEBUG_PRINT | |
| if (!ENTER_LOOP1) | |
| { | |
| printf("LED 1 Toggled\r\n"); | |
| ENTER_LOOP1 = true; | |
| } | |
| #endif | |
| } | |
| if (timer1_interrupt_flag) | |
| { | |
| /*Clear the timer 1 interrupt flag */ | |
| timer1_interrupt_flag = false; | |
| /* Toggle the USER LED state */ | |
| XMC_GPIO_ToggleOutput(CYBSP_USER_LED2_PORT, CYBSP_USER_LED2_PIN); | |
| #if ENABLE_XMC_DEBUG_PRINT | |
| if (!ENTER_LOOP2) | |
| { | |
| printf("LED 2 Toggled\r\n"); | |
| ENTER_LOOP2 = true; | |
| } | |
| #endif | |
| } | |
| } | |
| } | |
| /* [] END OF FILE */ |