123 lines
2.8 KiB
C
123 lines
2.8 KiB
C
//
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// Created by cfif on 03.06.2024.
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//
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#include "CanPorts.h"
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#include "string.h"
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#include "fc7xxx_driver_port.h"
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#include "fc7xxx_driver_gpio.h"
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tCanPorts CAN_PORTS;
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typedef struct {
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uint32_t u32CanRAM[4];
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} Can_RamType;
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ALIGN(256) Can_RamType g_aRxDataBuf[16]; // dma ring buffer size is 256
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static void DMA_TransferCompleteCallback(void) {
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CanSerialPortFrameIrqRxProcessing(CAN_PORTS.Can0_IO.env, (uint32_t *)&g_aRxDataBuf[0]);
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}
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static void DMA_ErrorCallback(void) {
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while (1) {
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__asm("nop");
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}
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}
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static void vCanPort_InitCAN0RxTxPin() {
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PORT_InitType tInitStruct = {0U};
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GPIO_InitType tGpioInitStruct = {0};
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/* CAN0_STB */
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/* PortC 30: MUX = GPIO output */
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tInitStruct.u32PortPins = PORT_PIN_30;
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tInitStruct.uPortPinMux.u32PortPinMode = PORT_GPIO_MODE;
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PORT_InitPins(PORT_C, &tInitStruct);
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tGpioInitStruct.u32GpioPins = PORT_PIN_30;
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tGpioInitStruct.ePinDirection = GPIO_OUT;
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tGpioInitStruct.ePinLevel = GPIO_LOW;
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GPIO_InitPins(GPIO_C, &tGpioInitStruct);
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/* Port C2: MUX = ALT3, CAN0_RX */
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tInitStruct.u32PortPins = PORT_PIN_2;
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tInitStruct.uPortPinMux.u32PortPinMode = PORTC_2_FLEXCAN0_RX;
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tInitStruct.bPullEn = FALSE;
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tInitStruct.ePullSel = PORT_PULL_UP;
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PORT_InitPins(PORT_C, &tInitStruct);
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tGpioInitStruct.u32GpioPins = PORT_PIN_2;
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tGpioInitStruct.ePinDirection = GPIO_IN;
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GPIO_InitPins((GPIO_InstanceType) PORT_C, &tGpioInitStruct);
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/* Port C3: MUX = ALT3, CAN0_TX */
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tInitStruct.u32PortPins = PORT_PIN_3;
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tInitStruct.uPortPinMux.u32PortPinMode = PORTC_3_FLEXCAN0_TX;
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PORT_InitPins(PORT_C, &tInitStruct);
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tGpioInitStruct.u32GpioPins = PORT_PIN_3;
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tGpioInitStruct.ePinDirection = GPIO_OUT;
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tGpioInitStruct.ePinLevel = GPIO_HIGH;
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GPIO_InitPins(GPIO_C, &tGpioInitStruct);
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}
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static void vCanPort_InitCan0() {
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vCanPort_InitCAN0RxTxPin();
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vCanSerialPortFrameDMAInit(
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&CAN_PORTS.Can0,
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FLEXCAN0,
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0, // CAN0 = 0 ... CAN3 = 3
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FlexCAN0_IRQn, // // FlexCAN0_IRQn ... FlexCAN3_IRQn
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0xFF,
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DMA_CHANNEL_1,
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DMA_REQ_FLEXCAN0,
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(uint8_t *)&g_aRxDataBuf[0],
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DMA1_IRQn,
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0x55,
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1,
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FLEXCAN_BAUD_500K,
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FLEXCAN_ID_STD,
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0x55,
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NULL,
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NULL,
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NULL,
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NULL,
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DMA_TransferCompleteCallback,
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DMA_ErrorCallback
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);
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}
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void CanPorts_Init() {
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CAN_PORTS.Can0.reInit = false;
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vCanPort_InitCan0();
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CAN_PORTS.Can0_IO = CanPortFrame_GetIo(&CAN_PORTS.Can0);
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}
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void CAN0_IRQHandler(void)
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{
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FLEXCAN_IRQHandler(0U);
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}
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void CAN1_IRQHandler(void)
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{
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FLEXCAN_IRQHandler(1U);
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}
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void CAN2_IRQHandler(void)
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{
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FLEXCAN_IRQHandler(2U);
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}
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void CAN3_IRQHandler(void)
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{
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FLEXCAN_IRQHandler(3U);
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} |