Page 176 - MDP2022-2

i = 0;

}

char get_button(void) {
uint8_t dt[2];
uint8_t button;

dt[0] = KEYPAD_UPDATE_FIFO;
dt[1] = 0x01;
res = HAL_I2C_Master_Transmit(&hi2c2, QWIIC_KEYPAD_ADDR, dt, 2, 10);
// HAL_I2C_Master_Transmit_DMA(&hi2c2, QWIIC_KEYPAD_ADDR, dt, 2);
dt[0] = KEYPAD_BUTTON;
res = HAL_I2C_Master_Transmit(&hi2c2, QWIIC_KEYPAD_ADDR, dt, 1, 10);
//res = HAL_I2C_Master_Receive_DMA(&hi2c2, QWIIC_KEYPAD_ADDR, &button, 1);
//res = HAL_I2C_Master_Transmit_DMA(&hi2c2, QWIIC_KEYPAD_ADDR, dt, 1);
res = HAL_I2C_Master_Receive(&hi2c2, QWIIC_KEYPAD_ADDR, &button, 1, 10);
return button;
}

void set_tone(uint16_t tone) {
htim3.Instance->ARR = melody[tone] - 1;
htim3.Instance->CCR1 = (melody[tone] - 1) * 50 / 100;
}

void _ham(void) {
for (int i = 0; i < 7; i++) {
set_tone(i);
HAL_Delay(500);
htim3.Instance->CCR1 = 0;
HAL_Delay(500);
}
}

void HAL_TIM_PWM_PulseFinishedCallback(TIM_HandleTypeDef *htim) {
if (htim->Instance == TIM1)
HAL_TIM_PWM_Stop_DMA(&htim1, TIM_CHANNEL_1);
datasentflag = 1;
}

/* USER CODE END 0 */

/**
* @brief The application entry point.
* @retval int