from: https://eroro.tistory.com/601
Remote 16-bit I/O expander for I2C-bus 테스트 프로그램
PIN 7에서 PIN 10번으로 넘어가는 부분을 PIN 8번으로 작성하였습니다.
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/************************** (C) COPYRIGHT 2023 ***************** * File Name : * Author : * Version : Ver 0.1 * Date : 2023/03/15 * Description : * * Revision History * Date Version Name Description 2023/03/15 0.1 Oanny Proto. *******************************************************************************/ #ifndef __USR_I2C_H #define __USR_I2C_H #include "stm32f10x.h" #include "usr_system.h" /* ADDR : 0100 A2 A1 A0 RW */ #define PCF8575_ADDRESS 0x40 /* DATA DIR => 0100 A2 A1 A0 RW (ACK) P07 P06 P05 P04 P03 P02 P01 P00 (ACK) P17 P16 P15 P14 P13 P12 P11 P00 (ACK) */ #define I2C_Speed 100000 #define I2C_1 1 #define I2C_2 2 /* BASE : 0100 A2 A1 A0 RW (ACK) P07 P06 P05 P04 P03 P02 P01 P00 (ACK) P17 P16 P15 P14 P13 P12 P11 P00 (ACK) READ : 0100 A2 A1 A0 0 (ACK) P07 P06 P05 P04 P03 P02 P01 P00 (ACK) P17 P16 P15 P14 P13 P12 P11 P00 (ACK) WRITE : 0100 A2 A1 A0 1 (ACK) P07 P06 P05 P04 P03 P02 P01 P00 (ACK) P17 P16 P15 P14 P13 P12 P11 P00 (ACK) */ #define PCF8575_Pin_0 ((uint8_t)0x0001) /*!< Pin 0 selected */ #define PCF8575_Pin_1 ((uint8_t)0x0002) /*!< Pin 1 selected */ #define PCF8575_Pin_2 ((uint8_t)0x0004) /*!< Pin 2 selected */ #define PCF8575_Pin_3 ((uint8_t)0x0008) /*!< Pin 3 selected */ #define PCF8575_Pin_4 ((uint8_t)0x0010) /*!< Pin 4 selected */ #define PCF8575_Pin_5 ((uint8_t)0x0020) /*!< Pin 5 selected */ #define PCF8575_Pin_6 ((uint8_t)0x0040) /*!< Pin 6 selected */ #define PCF8575_Pin_7 ((uint8_t)0x0080) /*!< Pin 7 selected */ #define PCF8575_Pin_8 ((uint16_t)0x0100) /*!< Pin 8 selected */ #define PCF8575_Pin_9 ((uint16_t)0x0200) /*!< Pin 9 selected */ #define PCF8575_Pin_10 ((uint16_t)0x0400) /*!< Pin 10 selected */ #define PCF8575_Pin_11 ((uint16_t)0x0800) /*!< Pin 11 selected */ #define PCF8575_Pin_12 ((uint16_t)0x1000) /*!< Pin 12 selected */ #define PCF8575_Pin_13 ((uint16_t)0x2000) /*!< Pin 13 selected */ #define PCF8575_Pin_14 ((uint16_t)0x4000) /*!< Pin 14 selected */ #define PCF8575_Pin_15 ((uint16_t)0x8000) /*!< Pin 15 selected */ #define PCF8575_Pin_All ((uint16_t)0xFFFF) /*!< All pins selected */ void I2C_Config(uint8_t i2c, uint32_t speed); void I2C2_ByteWrite(uint16_t a_DeviceAddr, uint8_t* pBuffer); void I2C2_BufferRead(uint16_t a_DeviceAddr, uint8_t* pBuffer, uint16_t NumByteToRead); void PCF8575_Demo(void); #endif |
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/************************** (C) COPYRIGHT 2023 ***************** * File Name : * Author : * Version : Ver 0.1 * Date : 2023/03/15 * Description : * * Revision History * Date Version Name Description 2023/03/15 0.1 Oanny Proto. *******************************************************************************/ #include <stdarg.h> #include <stdio.h> #include <string.h> #include "usr_i2c.h" #include "usr_uart.h" /* Private typedef -----------------------------------------------------------*/ /* Private define ------------------------------------------------------------*/ /* Private macro ------------------------------------------------------------*/ /* Private variables ---------------------------------------------------------*/ /* Private function prototypes ------------------------------------------------*/ /* Private functions ---------------------------------------------------------*/ #if 0 typedef enum {FAILED = 0, PASSED = !FAILED} TestStatus; /******************************************************************************* * Function Name : * Parameters : * Return : none * Description : *******************************************************************************/ TestStatus Buffercmp(uint8_t* pBuffer1, uint8_t* pBuffer2, uint16_t BufferLength) { while(BufferLength--) { if(*pBuffer1 != *pBuffer2) { return FAILED; } pBuffer1++; pBuffer2++; } return PASSED; } #endif /******************************************************************************* * Function Name : * Parameters : * Return : none * Description : - I2C2 - PB10 EN PB11 FREQ I2C_Config(I2C_1, I2C_Speed); *******************************************************************************/ void I2C_Config(uint8_t i2c, uint32_t speed) { GPIO_InitTypeDef GPIO_InitStructure; I2C_InitTypeDef I2C_InitStructure; if(i2c == I2C_1){ /* I2C Periph clock enable */ RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C1, ENABLE); /* GPIO Periph clock enable */ RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE); /* Configure I2C1 pins: SCL and SDA */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_OD; GPIO_Init(GPIOB, &GPIO_InitStructure); /* I2C configuration */ I2C_InitStructure.I2C_Mode = I2C_Mode_I2C; I2C_InitStructure.I2C_DutyCycle = I2C_DutyCycle_2; I2C_InitStructure.I2C_OwnAddress1 = PCF8575_ADDRESS; I2C_InitStructure.I2C_Ack = I2C_Ack_Enable; I2C_InitStructure.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit; I2C_InitStructure.I2C_ClockSpeed = speed; /* I2C Peripheral Enable */ I2C_Cmd(I2C1, ENABLE); /* Apply I2C configuration after enabling it */ I2C_Init(I2C1, &I2C_InitStructure); } else if(i2c == I2C_2){ /* I2C Periph clock enable */ RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C2, ENABLE); /* GPIO Periph clock enable */ RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE); /* Configure I2C2 pins: SCL and SDA */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10 | GPIO_Pin_11; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_OD; GPIO_Init(GPIOB, &GPIO_InitStructure); /* I2C configuration */ I2C_InitStructure.I2C_Mode = I2C_Mode_I2C; I2C_InitStructure.I2C_DutyCycle = I2C_DutyCycle_2; I2C_InitStructure.I2C_OwnAddress1 = PCF8575_ADDRESS; I2C_InitStructure.I2C_Ack = I2C_Ack_Enable; I2C_InitStructure.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit; I2C_InitStructure.I2C_ClockSpeed = speed; /* I2C Peripheral Enable */ I2C_Cmd(I2C2, ENABLE); /* Apply I2C configuration after enabling it */ I2C_Init(I2C2, &I2C_InitStructure); } } #define I2C_TIMEOUT 0x100000 /******************************************************************************* * Function Name : * Parameters : * Return : none * Description : *******************************************************************************/ void I2C2_ByteWrite(uint16_t a_DeviceAddr, uint8_t* pBuffer) { uint32_t I2C_Timeout = I2C_TIMEOUT; /* Send STRAT condition */ I2C_GenerateSTART(I2C2, ENABLE); /* Test on EV5 and clear it */ while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_MODE_SELECT)){ I2C_Timeout--; if(I2C_Timeout < 1) break; } /* Send EEPROM address for write */ I2C_Send7bitAddress(I2C2, a_DeviceAddr, I2C_Direction_Transmitter); I2C_Timeout = I2C_TIMEOUT; /* Test on EV6 and clear it */ while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED)){ I2C_Timeout--; if(I2C_Timeout < 1) break; } /* Send the byte to be written */ I2C_SendData(I2C2, pBuffer[0]); I2C_Timeout = I2C_TIMEOUT; /* Test on EV8 and clear it */ while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_BYTE_TRANSMITTED)){ I2C_Timeout--; if(I2C_Timeout < 1) break; } /* Send the byte to be written */ I2C_SendData(I2C2, pBuffer[1]); I2C_Timeout = I2C_TIMEOUT; /* Test on EV8 and clear it */ while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_BYTE_TRANSMITTED)){ I2C_Timeout--; if(I2C_Timeout < 1) break; } /* Send STOP condition */ I2C_GenerateSTOP(I2C2, ENABLE); } /******************************************************************************* * Function Name : * Description : * Parameters : None * Return : None *******************************************************************************/ void I2C2_ByteRead(uint16_t a_DeviceAddr, uint8_t* pBuffer, uint16_t NumByteToRead) { uint32_t I2C_Timeout = I2C_TIMEOUT; /* While the bus is busy */ while(I2C_GetFlagStatus(I2C2, I2C_FLAG_BUSY)){ I2C_Timeout--; if(I2C_Timeout < 1) break; } /* Send STRAT condition a second time */ I2C_GenerateSTART(I2C2, ENABLE); I2C_Timeout = I2C_TIMEOUT; /* Test on EV5 and clear it */ while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_MODE_SELECT)){ I2C_Timeout--; if(I2C_Timeout < 1) break; } /* Send EEPROM address for read */ I2C_Send7bitAddress(I2C2, a_DeviceAddr, I2C_Direction_Receiver); I2C_Timeout = I2C_TIMEOUT; /* Test on EV6 and clear it */ while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_RECEIVER_MODE_SELECTED)){ I2C_Timeout--; if(I2C_Timeout < 1) break; } /* While there is data to be read */ while(NumByteToRead) { if(NumByteToRead == 1){ /* Disable Acknowledgement */ I2C_AcknowledgeConfig(I2C2, DISABLE); /* Send STOP Condition */ I2C_GenerateSTOP(I2C2, ENABLE); } /* Test on EV7 and clear it */ if(I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_BYTE_RECEIVED)){ /* Read a byte from the EEPROM */ *pBuffer = I2C_ReceiveData(I2C2); /* Point to the next location where the byte read will be saved */ pBuffer++; /* Decrement the read bytes counter */ NumByteToRead--; } } /* Enable Acknowledgement to be ready for another reception */ I2C_AcknowledgeConfig(I2C2, ENABLE); } /******************************************************************************* * Function Name : * Parameters : * Return : none * Description : *******************************************************************************/ void I2C2_HalfWordWrite(uint16_t a_DeviceAddr, uint16_t pBuffer) { uint32_t I2C_Timeout = I2C_TIMEOUT; /* Send STRAT condition */ I2C_GenerateSTART(I2C2, ENABLE); /* Test on EV5 and clear it */ while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_MODE_SELECT)){ I2C_Timeout--; if(I2C_Timeout < 1) break; } /* Send EEPROM address for write */ I2C_Send7bitAddress(I2C2, a_DeviceAddr, I2C_Direction_Transmitter); I2C_Timeout = I2C_TIMEOUT; /* Test on EV6 and clear it */ while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED)){ I2C_Timeout--; if(I2C_Timeout < 1) break; } /* Send the byte to be written */ I2C_SendData(I2C2, (uint8_t)(pBuffer & 0x00FF)); // DEBUGPRINT("W1 %X\r\n", (uint8_t)(pBuffer & 0x00FF)); I2C_Timeout = I2C_TIMEOUT; /* Test on EV8 and clear it */ while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_BYTE_TRANSMITTED)){ I2C_Timeout--; if(I2C_Timeout < 1) break; } /* Send the byte to be written */ I2C_SendData(I2C2, (uint8_t)((pBuffer & 0xFF00) >> 8)); // DEBUGPRINT("W2 %X\r\n", (uint8_t)((pBuffer & 0xFF00) >> 8)); I2C_Timeout = I2C_TIMEOUT; /* Test on EV8 and clear it */ while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_BYTE_TRANSMITTED)){ I2C_Timeout--; if(I2C_Timeout < 1) break; } /* Send STOP condition */ I2C_GenerateSTOP(I2C2, ENABLE); } /******************************************************************************* * Function Name : * Description : * Parameters : None * Return : None *******************************************************************************/ uint16_t I2C2_HalfWordRead(uint16_t a_DeviceAddr) { uint32_t I2C_Timeout = I2C_TIMEOUT; uint8_t I2C_Buffer[2], Buf_Poi = 0, NumByteToRead; /* While the bus is busy */ while(I2C_GetFlagStatus(I2C2, I2C_FLAG_BUSY)){ I2C_Timeout--; if(I2C_Timeout < 1) break; } /* Send STRAT condition a second time */ I2C_GenerateSTART(I2C2, ENABLE); I2C_Timeout = I2C_TIMEOUT; /* Test on EV5 and clear it */ while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_MODE_SELECT)){ I2C_Timeout--; if(I2C_Timeout < 1) break; } /* Send EEPROM address for read */ I2C_Send7bitAddress(I2C2, a_DeviceAddr, I2C_Direction_Receiver); I2C_Timeout = I2C_TIMEOUT; /* Test on EV6 and clear it */ while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_RECEIVER_MODE_SELECTED)){ I2C_Timeout--; if(I2C_Timeout < 1) break; } NumByteToRead = 2; /* While there is data to be read */ while(NumByteToRead) { if(NumByteToRead == 1){ /* Disable Acknowledgement */ I2C_AcknowledgeConfig(I2C2, DISABLE); /* Send STOP Condition */ I2C_GenerateSTOP(I2C2, ENABLE); } /* Test on EV7 and clear it */ if(I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_BYTE_RECEIVED)){ /* Read a byte from the EEPROM */ I2C_Buffer[Buf_Poi] = I2C_ReceiveData(I2C2); /* Point to the next location where the byte read will be saved */ Buf_Poi++; /* Decrement the read bytes counter */ NumByteToRead--; } } /* Enable Acknowledgement to be ready for another reception */ I2C_AcknowledgeConfig(I2C2, ENABLE); return I2C_Buffer[0] | (I2C_Buffer[1] << 8); } /******************************************************************************* * Function Name : * Description : * Parameters : None * Return : None *******************************************************************************/ uint8_t PCF8575_ReadInputDataBit(uint16_t GPIO_Pin) { uint8_t bitstatus = 0x00; if ((I2C2_HalfWordRead(PCF8575_ADDRESS) & GPIO_Pin) != (uint32_t)Bit_RESET){ bitstatus = (uint8_t)Bit_SET; } else{ bitstatus = (uint8_t)Bit_RESET; } return bitstatus; } /******************************************************************************* * Function Name : * Description : * Parameters : None * Return : None *******************************************************************************/ void PCF8575_Demo(void) { I2C_Config(I2C_2, I2C_Speed); while(1){ #if 0 uint8_t i = 0; uint8_t I2C_Buffer[2] = {0, }; if(i == 0){ I2C_Buffer[0] = 0; I2C_Buffer[1] = 0; // DEBUGPRINT("%X, %X\r\n", I2C_Buffer[0], I2C_Buffer[1]); } else if(i == 1){ I2C_Buffer[0] = (uint8_t)GPIO_Pin_0; I2C_Buffer[1] = 0; // DEBUGPRINT("%X, %X\r\n", I2C_Buffer[0], I2C_Buffer[1]); } else if(i == 2){ I2C_Buffer[0] = (uint8_t)(GPIO_Pin_0 | GPIO_Pin_1); I2C_Buffer[1] = 0; // DEBUGPRINT("%X, %X\r\n", I2C_Buffer[0], I2C_Buffer[1]); } else if(i == 3){ I2C_Buffer[0] = (uint8_t)(GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_2); I2C_Buffer[1] = 0; // DEBUGPRINT("%X, %X\r\n", I2C_Buffer[0], I2C_Buffer[1]); } else if(i == 4){ I2C_Buffer[0] = (uint8_t)(GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_2 | GPIO_Pin_3); I2C_Buffer[1] = 0; // DEBUGPRINT("%X, %X\r\n", I2C_Buffer[0], I2C_Buffer[1]); } else if(i == 5){ I2C_Buffer[0] = (uint8_t)(GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_2 | GPIO_Pin_3 | GPIO_Pin_4); I2C_Buffer[1] = 0; // DEBUGPRINT("%X, %X\r\n", I2C_Buffer[0], I2C_Buffer[1]); } else if(i == 6){ I2C_Buffer[0] = (uint8_t)(GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_2 | GPIO_Pin_3 | GPIO_Pin_4 | GPIO_Pin_5); I2C_Buffer[1] = 0; // DEBUGPRINT("%X, %X\r\n", I2C_Buffer[0], I2C_Buffer[1]); } else if(i == 7){ I2C_Buffer[0] = (uint8_t)(GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_2 | GPIO_Pin_3 | GPIO_Pin_4 | GPIO_Pin_5 | GPIO_Pin_6); I2C_Buffer[1] = 0; // DEBUGPRINT("%X, %X\r\n", I2C_Buffer[0], I2C_Buffer[1]); } else if(i == 8){ I2C_Buffer[0] = (uint8_t)(GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_2 | GPIO_Pin_3 | GPIO_Pin_4 | GPIO_Pin_5 | GPIO_Pin_6 | GPIO_Pin_7); I2C_Buffer[1] = 0; // DEBUGPRINT("%X, %X\r\n", I2C_Buffer[0], I2C_Buffer[1]); } else if(i == 9){ I2C_Buffer[1] = (uint8_t)GPIO_Pin_0; I2C_Buffer[0] = 0; // DEBUGPRINT("%X, %X\r\n", I2C_Buffer[0], I2C_Buffer[1]); } else if(i == 10){ I2C_Buffer[1] = (uint8_t)(GPIO_Pin_0 | GPIO_Pin_1); I2C_Buffer[0] = 0; // DEBUGPRINT("%X, %X\r\n", I2C_Buffer[0], I2C_Buffer[1]); } else if(i == 11){ I2C_Buffer[1] = (uint8_t)(GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_2); I2C_Buffer[0] = 0; // DEBUGPRINT("%X, %X\r\n", I2C_Buffer[0], I2C_Buffer[1]); } else if(i == 12){ I2C_Buffer[1] = (uint8_t)(GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_2 | GPIO_Pin_3); I2C_Buffer[0] = 0; // DEBUGPRINT("%X, %X\r\n", I2C_Buffer[0], I2C_Buffer[1]); } else if(i == 13){ I2C_Buffer[1] = (uint8_t)(GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_2 | GPIO_Pin_3 | GPIO_Pin_4); I2C_Buffer[0] = 0; // DEBUGPRINT("%X, %X\r\n", I2C_Buffer[0], I2C_Buffer[1]); } else if(i == 14){ I2C_Buffer[1] = (uint8_t)(GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_2 | GPIO_Pin_3 | GPIO_Pin_4 | GPIO_Pin_5); I2C_Buffer[0] = 0; // DEBUGPRINT("%X, %X\r\n", I2C_Buffer[0], I2C_Buffer[1]); } else if(i == 15){ I2C_Buffer[1] = (uint8_t)(GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_2 | GPIO_Pin_3 | GPIO_Pin_4 | GPIO_Pin_5 | GPIO_Pin_6); I2C_Buffer[0] = 0; // DEBUGPRINT("%X, %X\r\n", I2C_Buffer[0], I2C_Buffer[1]); } else if(i == 16){ I2C_Buffer[1] = (uint8_t)(GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_2 | GPIO_Pin_3 | GPIO_Pin_4 | GPIO_Pin_5 | GPIO_Pin_6 | GPIO_Pin_7); I2C_Buffer[0] = 0; // DEBUGPRINT("%X, %X\r\n", I2C_Buffer[0], I2C_Buffer[1]); } GPIO_ToggleBit(GPIOA, GPIO_Pin_3); I2C2_ByteWrite(PCF8575_ADDRESS, I2C_Buffer); delay_ms(500); I2C_Buffer[0] = 0; I2C_Buffer[1] = 0; I2C2_ByteRead(PCF8575_ADDRESS, I2C_Buffer, 2); DEBUGPRINT("%X, %X\r\n", I2C_Buffer[0], I2C_Buffer[1]); i++; if(i > 16) i=0; #else uint16_t I2C_Buffer; I2C_Buffer = PCF8575_Pin_0 | PCF8575_Pin_8 | PCF8575_Pin_9; GPIO_ToggleBit(GPIOA, GPIO_Pin_3); I2C2_HalfWordWrite(PCF8575_ADDRESS, I2C_Buffer); I2C_Buffer = 0; DEBUGPRINT("R1 %X\r\n", I2C2_HalfWordRead(PCF8575_ADDRESS)); if(PCF8575_ReadInputDataBit(PCF8575_Pin_0) == Bit_SET){ DEBUGPRINT("P0 Set\r\n"); } if(PCF8575_ReadInputDataBit(PCF8575_Pin_1) == Bit_SET){ DEBUGPRINT("P1 Set\r\n"); } if(PCF8575_ReadInputDataBit(PCF8575_Pin_2) == Bit_SET){ DEBUGPRINT("P2 Set\r\n"); } if(PCF8575_ReadInputDataBit(PCF8575_Pin_3) == Bit_SET){ DEBUGPRINT("P3 Set\r\n"); } if(PCF8575_ReadInputDataBit(PCF8575_Pin_4) == Bit_SET){ DEBUGPRINT("P4 Set\r\n"); } if(PCF8575_ReadInputDataBit(PCF8575_Pin_5) == Bit_SET){ DEBUGPRINT("P5 Set\r\n"); } if(PCF8575_ReadInputDataBit(PCF8575_Pin_6) == Bit_SET){ DEBUGPRINT("P6 Set\r\n"); } if(PCF8575_ReadInputDataBit(PCF8575_Pin_7) == Bit_SET){ DEBUGPRINT("P7 Set\r\n"); } if(PCF8575_ReadInputDataBit(PCF8575_Pin_8) == Bit_SET){ DEBUGPRINT("P8 Set\r\n"); } if(PCF8575_ReadInputDataBit(PCF8575_Pin_9) == Bit_SET){ DEBUGPRINT("P9 Set\r\n"); } if(PCF8575_ReadInputDataBit(PCF8575_Pin_10) == Bit_SET){ DEBUGPRINT("P10 Set\r\n"); } if(PCF8575_ReadInputDataBit(PCF8575_Pin_11) == Bit_SET){ DEBUGPRINT("P11 Set\r\n"); } if(PCF8575_ReadInputDataBit(PCF8575_Pin_12) == Bit_SET){ DEBUGPRINT("P12 Set\r\n"); } if(PCF8575_ReadInputDataBit(PCF8575_Pin_13) == Bit_SET){ DEBUGPRINT("P13 Set\r\n"); } if(PCF8575_ReadInputDataBit(PCF8575_Pin_14) == Bit_SET){ DEBUGPRINT("P14 Set\r\n"); } if(PCF8575_ReadInputDataBit(PCF8575_Pin_15) == Bit_SET){ DEBUGPRINT("P15 Set\r\n"); } delay_ms(500); I2C_Buffer = 0; GPIO_ToggleBit(GPIOA, GPIO_Pin_3); I2C2_HalfWordWrite(PCF8575_ADDRESS, I2C_Buffer); I2C_Buffer = 0; // DEBUGPRINT("R2 %X\r\n", I2C2_HalfWordRead(PCF8575_ADDRESS)); delay_ms(500); #endif } } |