95 lines
2.8 KiB
C
95 lines
2.8 KiB
C
#include "fsl_common.h"
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#include "fsl_port.h"
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#include "test_led.h"
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#include "init_peripherals.h"
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#include "i2c_addresses.h"
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#include "fsl_i2c.h"
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#include "fsl_clock.h"
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#include "i2c.h"
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#include "led_pwm.h"
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#include "slave_protocol_handler.h"
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#include "i2c_watchdog.h"
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i2c_slave_config_t slaveConfig;
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i2c_slave_handle_t slaveHandle;
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uint8_t byteIn;
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uint8_t rxMessagePos;
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i2c_slave_transfer_event_t prevEvent;
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static void i2cSlaveCallback(I2C_Type *base, i2c_slave_transfer_t *xfer, void *userData)
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{
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switch (xfer->event) {
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case kI2C_SlaveTransmitEvent:
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SlaveTxHandler();
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xfer->data = (uint8_t*)&TxMessage;
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xfer->dataSize = TxMessage.length + I2C_MESSAGE_HEADER_LENGTH;
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break;
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case kI2C_SlaveReceiveEvent:
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if (prevEvent == kI2C_SlaveReceiveEvent) {
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((uint8_t*)&RxMessage)[rxMessagePos++] = byteIn;
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} else {
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rxMessagePos = 0;
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memset(&RxMessage, 0, I2C_MESSAGE_MAX_TOTAL_LENGTH);
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}
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xfer->data = (uint8_t*)&byteIn;
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xfer->dataSize = 1;
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break;
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case kI2C_SlaveCompletionEvent:
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if (prevEvent == kI2C_SlaveReceiveEvent) {
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((uint8_t*)&RxMessage)[rxMessagePos] = byteIn;
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RxMessage.length = rxMessagePos - I2C_MESSAGE_HEADER_LENGTH;
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SlaveRxHandler();
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}
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break;
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default:
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break;
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}
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prevEvent = xfer->event;
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}
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void InitInterruptPriorities(void)
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{
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NVIC_SetPriority(I2C0_IRQn, 1);
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NVIC_SetPriority(TPM1_IRQn, 1);
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}
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void InitI2c(void) {
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port_pin_config_t pinConfig = {
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.pullSelect = kPORT_PullUp,
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};
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CLOCK_EnableClock(I2C_BUS_SDA_CLOCK);
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CLOCK_EnableClock(I2C_BUS_SCL_CLOCK);
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pinConfig.mux = I2C_BUS_MUX;
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PORT_SetPinConfig(I2C_BUS_SDA_PORT, I2C_BUS_SDA_PIN, &pinConfig);
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PORT_SetPinConfig(I2C_BUS_SCL_PORT, I2C_BUS_SCL_PIN, &pinConfig);
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I2C_SlaveGetDefaultConfig(&slaveConfig);
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slaveConfig.slaveAddress = I2C_ADDRESS_LEFT_KEYBOARD_HALF_FIRMWARE;
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I2C_SlaveInit(I2C_BUS_BASEADDR, &slaveConfig);
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I2C_SlaveTransferCreateHandle(I2C_BUS_BASEADDR, &slaveHandle, i2cSlaveCallback, NULL);
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slaveHandle.eventMask |= kI2C_SlaveCompletionEvent;
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I2C_SlaveTransferNonBlocking(I2C_BUS_BASEADDR, &slaveHandle, kI2C_SlaveCompletionEvent);
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}
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void InitLedDriver(void) {
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CLOCK_EnableClock(LED_DRIVER_SDB_CLOCK);
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PORT_SetPinMux(LED_DRIVER_SDB_PORT, LED_DRIVER_SDB_PIN, kPORT_MuxAsGpio);
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GPIO_PinInit(LED_DRIVER_SDB_GPIO, LED_DRIVER_SDB_PIN, &(gpio_pin_config_t){kGPIO_DigitalOutput, 0});
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GPIO_WritePinOutput(LED_DRIVER_SDB_GPIO, LED_DRIVER_SDB_PIN, 1);
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}
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void InitPeripherals(void)
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{
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InitInterruptPriorities();
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InitLedDriver();
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InitTestLed();
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LedPwm_Init();
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InitI2c();
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// InitI2cWatchdog();
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}
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