116 lines
3.0 KiB
C
116 lines
3.0 KiB
C
#include "board.h"
|
|
#include "fsl_clock_manager.h"
|
|
#include "fsl_i2c_slave_driver.h"
|
|
#include "fsl_i2c_shared_function.h"
|
|
#include "i2c.h"
|
|
#include "main.h"
|
|
|
|
uint8_t isSw2Pressed;
|
|
uint8_t isSw3Pressed;
|
|
uint8_t buffer[I2C_DATA_LENGTH];
|
|
|
|
void I2C0_IRQHandler(void)
|
|
{
|
|
I2C_DRV_IRQHandler(I2C0_IDX);
|
|
}
|
|
|
|
static void i2c_slave_callback(uint8_t instance, i2c_slave_event_t i2cEvent, void *param)
|
|
{
|
|
i2c_slave_state_t *slaveState = I2C_DRV_SlaveGetHandler(instance);
|
|
|
|
switch (i2cEvent) {
|
|
case kI2CSlaveTxReq:
|
|
slaveState->txSize = I2C_DATA_LENGTH;
|
|
slaveState ->txBuff = buffer;
|
|
slaveState ->isTxBusy = true;
|
|
buffer[0] = isSw2Pressed;
|
|
buffer[1] = isSw3Pressed;
|
|
break;
|
|
|
|
case kI2CSlaveTxEmpty:
|
|
slaveState->isTxBusy = false;
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
int main(void)
|
|
{
|
|
// Initialize clock.
|
|
|
|
CLOCK_SYS_EnablePortClock(PORTA_IDX);
|
|
CLOCK_SYS_EnablePortClock(PORTB_IDX);
|
|
|
|
BOARD_ClockInit();
|
|
|
|
// Initialize GPIO.
|
|
|
|
gpio_input_pin_user_config_t inputPin[] =
|
|
{
|
|
{
|
|
.pinName = kGpioSW2,
|
|
.config.isPullEnable = true,
|
|
.config.pullSelect = kPortPullUp,
|
|
.config.isPassiveFilterEnabled = false,
|
|
.config.interrupt = kPortIntDisabled,
|
|
},
|
|
{
|
|
.pinName = kGpioSW3,
|
|
.config.isPullEnable = true,
|
|
.config.pullSelect = kPortPullUp,
|
|
.config.isPassiveFilterEnabled = false,
|
|
.config.interrupt = kPortIntDisabled,
|
|
},
|
|
{
|
|
.pinName = GPIO_PINS_OUT_OF_RANGE,
|
|
}
|
|
};
|
|
|
|
gpio_output_pin_user_config_t outputPin[] =
|
|
{
|
|
{
|
|
.pinName = kGpioLED1,
|
|
.config.outputLogic = 0,
|
|
.config.slewRate = kPortFastSlewRate,
|
|
.config.driveStrength = kPortHighDriveStrength,
|
|
},
|
|
{
|
|
.pinName = kGpioLED3,
|
|
.config.outputLogic = 0,
|
|
.config.slewRate = kPortFastSlewRate,
|
|
.config.driveStrength = kPortHighDriveStrength,
|
|
},
|
|
{
|
|
.pinName = GPIO_PINS_OUT_OF_RANGE,
|
|
}
|
|
};
|
|
|
|
GPIO_DRV_Init(inputPin, outputPin);
|
|
|
|
// Initialize I2C.
|
|
|
|
i2c_slave_state_t slave;
|
|
|
|
i2c_slave_user_config_t userConfig = {
|
|
.address = LEFT_KEYBOARD_HALF_I2C_ADDRESS_7BIT,
|
|
.slaveCallback = i2c_slave_callback,
|
|
.callbackParam = NULL,
|
|
.slaveListening = true,
|
|
.startStopDetect = true,
|
|
};
|
|
|
|
configure_i2c_pins(0);
|
|
I2C_DRV_SlaveInit(BOARD_I2C_INSTANCE, &userConfig, &slave);
|
|
|
|
// Update switch states and toggle LEDs accordingly.
|
|
|
|
while (1) {
|
|
isSw2Pressed = GPIO_DRV_ReadPinInput(kGpioSW2);
|
|
isSw3Pressed = GPIO_DRV_ReadPinInput(kGpioSW3);
|
|
GPIO_DRV_WritePinOutput(kGpioLED1, isSw2Pressed);
|
|
GPIO_DRV_WritePinOutput(kGpioLED3, isSw3Pressed);
|
|
}
|
|
}
|