mcp23017程序包:树莓PI+STM32F429+arduino -

/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "stm32f4xx_hal.h"
#include "i2c.h"
#include "usart.h"
#include "gpio.h"
/* USER CODE BEGIN Includes */
#include "MCP23017.h"
/* USER CODE END Includes */
/* Private variables ---------------------------------------------------------*/
/* USER CODE BEGIN PV */
/* Private variables ---------------------------------------------------------*/
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
/* USER CODE BEGIN PFP */
/* Private function prototypes -----------------------------------------------*/
/* USER CODE END PFP */
/* USER CODE BEGIN 0 */
/* USER CODE END 0 */
/**
* @brief The application entry point.
*
* @retval None
*/
int main(void)
{
/* USER CODE BEGIN 1 */
/* USER CODE END 1 */
/* MCU Configuration----------------------------------------------------------*/
/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
HAL_Init();
/* USER CODE BEGIN Init */
//the param can be 0 to 7,don't solder A0,A1,A2 result in default address 0x27，param is 7
//Addr(BIN) Addr(hex) param
//010 0111 0x27 7
//010 0110 0x26 6
//010 0101 0x25 5
//010 0100 0x24 4
//010 0011 0x23 3
//010 0010 0x22 2
//010 0001 0x21 1
//010 0000 0x20 0
begin(7);
/* USER CODE END Init */
/* Configure the system clock */
SystemClock_Config();
/* USER CODE BEGIN SysInit */
/* USER CODE END SysInit */
/* Initialize all configured peripherals */
MX_GPIO_Init();
MX_USART1_UART_Init();
MX_I2C1_Init();
/* USER CODE BEGIN 2 */
//Change this Macro definition to different demo test
#define debug 0
#define outputTest 0
#define inputTest 0
//For interrupt test, you need Connect PA7 and PB7 to a button(when the button pressed,it connect to GND)
#define interruptTest 1
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
HAL_Delay(500);
#if(debug)
for(int addr = 0; addr< 22; addr++)
{
printf("addr:0x%02x,value:0x%02x\r\n",addr,readRegister(addr));
}
printf("------------------------------------------\r\n");
#endif
#if(outputTest)
for(int i = 0; i<16; i++)
{
pinMode(i, 0);
}
for(int i = 0; i<16; i++)
{
digitalWrite(i,1);
}
HAL_Delay(500);
for(int i = 0; i<16; i++)
{
digitalWrite(i,0);
}
#endif
#if(inputTest)
//Pin0 Output
pinMode(0, 0);
//Pin1 Input
pinMode(1, 1);
//Pin1 Pullup
pullUp(1,1);
digitalWrite(0, digitalRead(1));
#endif
#if(interruptTest)
//mirroring, don't openDrain, INT output pin will be low when interrupt occur
setupInterrupts(1,0,0);
//input
pinMode(7,1);
//pullup
pullUp(7,1);
//1 means compare against given value,and 1 means when differ from 1 occur the interrupt
setupInterruptPin(7,1);
//input
pinMode(15,1);
//pullup
pullUp(15,1);
//1 means compare against given value,and 1 means when differ from 1 occur the interrupt
setupInterruptPin(15,1);
#endif
}
/* USER CODE END 3 */
}
/**
* @brief System Clock Configuration
* @retval None
*/
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct;
RCC_ClkInitTypeDef RCC_ClkInitStruct;
/**Configure the main internal regulator output voltage
*/
__HAL_RCC_PWR_CLK_ENABLE();
__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
/**Initializes the CPU, AHB and APB busses clocks
*/
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
RCC_OscInitStruct.HSEState = RCC_HSE_ON;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
RCC_OscInitStruct.PLL.PLLM = 4;
RCC_OscInitStruct.PLL.PLLN = 168;
RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
RCC_OscInitStruct.PLL.PLLQ = 4;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
_Error_Handler(__FILE__, __LINE__);
}
/**Initializes the CPU, AHB and APB busses clocks
*/
RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
|RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5) != HAL_OK)
{
_Error_Handler(__FILE__, __LINE__);
}
/**Configure the Systick interrupt time
*/
HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000);
/**Configure the Systick
*/
HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK);
/* SysTick_IRQn interrupt configuration */
HAL_NVIC_SetPriority(SysTick_IRQn, 0, 0);
}
/* USER CODE BEGIN 4 */
void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
{
if(GPIO_Pin == GPIO_PIN_0)
{
printf("_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-\r\n");
printf("the key has been pressed!!!\r\n");
printf("the last interrupt Pin is: %d\r\n",getLastInterruptPin());
printf("the last interrupt value is: %d\r\n",getLastInterruptPinValue());
printf("_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-\r\n");
}
}
/* USER CODE END 4 */
/**
* @brief This function is executed in case of error occurrence.
* @param file: The file name as string.
* @param line: The line in file as a number.
* @retval None
*/
void _Error_Handler(char *file, int line)
{
/* USER CODE BEGIN Error_Handler_Debug */
/* User can add his own implementation to report the HAL error return state */
while(1)
{
}
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