红外芯片HXD019学习发送驱动

/* *红外HXD019D 驱动代码，芯片红外数据固定232字节。红外码229字节，剩余3个字节为芯片本身校验码 *代码已具有学习、发送功能 */ #include "Onboard.h" #include "ioCC2530.h" #include "sino_hal_config.h" #include "IR_HXD019.h" #define SCL P1_7 #define SDA P1_2 #define BUSY P1_3 #define I2C_SCL_H do{SCL=1;}while(0) #define I2C_SCL_L do{SCL=0;}while(0) #define I2C_SDA_H do{SDA=1;}while(0) #define I2C_SDA_L do{SDA=0;}while(0) #define SDA_OUT_ENABLE do{P1DIR |= (1<<2);}while(0) #define SDA_IN_ENABLE do{P1DIR &= ~(1<<2);}while(0) #define DELAY_40_US 28 #define DELAY_20_MS 20 #define NO_ACK 1 #define RECEIVE_ACK 0 #define GIR_DA (uint8) (SDA) #define GIR_BY (uint8) (BUSY) #define NO_ERROR 0 #define ERROR 1 #define BUF_SIZE 300 extern uint8 IRDA_learn_data_in_out(uint8*); static uint8 g_buf[BUF_SIZE]; void delay_us(uint16 us) { MicroWait(us); } void delay_ms(uint16 Time) { while(Time--) { delay_us(1000); } } void I2cOpen() { SDA_OUT_ENABLE; I2C_SCL_H; I2C_SDA_H; delay_us(DELAY_40_US); delay_us(DELAY_40_US); #if 1 I2C_SCL_L; delay_us(DELAY_40_US); //delay_us(DELAY_40_US); I2C_SCL_H; #endif delay_ms(40);///20ms } void I2cStart() { SDA_OUT_ENABLE; I2C_SCL_H; I2C_SDA_H; delay_us(DELAY_40_US); delay_us(DELAY_40_US); I2C_SDA_L; delay_us(DELAY_40_US * 10); I2C_SCL_L; delay_us(DELAY_40_US); delay_us(DELAY_40_US); } void I2cClose() { SDA_OUT_ENABLE; I2C_SCL_L; I2C_SDA_L; delay_us(DELAY_40_US); I2C_SCL_H; delay_us(DELAY_40_US); I2C_SDA_H; delay_us(DELAY_40_US);//stop } uint8 GetAck() { uint8 ack; ack = NO_ACK; I2C_SCL_L; SDA_IN_ENABLE; delay_us(DELAY_40_US); delay_us(DELAY_40_US); delay_us(DELAY_40_US); I2C_SCL_H; delay_us(DELAY_40_US); ack = GIR_DA; delay_us(DELAY_40_US); I2C_SCL_L; delay_us(DELAY_40_US*4); return ack; } void SenAck(void) { SDA_OUT_ENABLE; I2C_SCL_L; delay_us(DELAY_40_US); I2C_SDA_L; delay_us(DELAY_40_US); I2C_SCL_H; delay_us(DELAY_40_US); I2C_SCL_L; } uint8 I2CWriteData(uint8 d) { uint8 d_bit; uint8 ack; int16 i; SDA_OUT_ENABLE; for(i=7;i>=0;i--){ I2C_SCL_L; delay_us(50); d_bit = ((d >> i) & 0x01); if(d_bit) I2C_SDA_H; else I2C_SDA_L; delay_us(10); I2C_SCL_H; delay_us(28); I2C_SCL_L; } ack = GetAck(); return ack; } void I2CReadData(uint8 *p) { uint8 i; uint8 data=0; SDA_IN_ENABLE; for (i = 0; i < 8; i++) { data <<= 1; I2C_SCL_H; delay_us(DELAY_40_US); data |= GIR_DA&0x1; I2C_SCL_L; delay_us(DELAY_40_US); delay_us(DELAY_40_US); } I2C_SCL_L; delay_us(DELAY_40_US); *p = data; SenAck(); delay_us(DELAY_40_US * 2); } uint8 ReadI2c(uint8 *buf,uint8 *ch) { uint8 data; uint8 i,j; volatile uint8 checksum; I2cOpen(); I2cStart(); delay_us(DELAY_40_US); ///----------------- I2CWriteData(0x30); delay_us(DELAY_40_US); I2CWriteData(0x62); delay_us(DELAY_40_US); #if 1 I2cStart(); delay_us(DELAY_40_US); #endif I2CWriteData(0x31); delay_us(DELAY_40_US); I2CReadData(&data); delay_us(DELAY_40_US); if(data != 0x00) { I2cClose(); return 0; } buf[0] = 0x30; buf[1] = 0x03; checksum = 0; for (i = 2; i < 231; i++) {///--229 I2CReadData(&data); delay_us(DELAY_40_US); buf[i] = data; checksum += data; } buf[231] = checksum + 0x30 + 0x3; delay_us(DELAY_40_US); I2cClose(); delay_us(DELAY_40_US); delay_us(DELAY_40_US); if(data != checksum){ checksum = 0; } return NO_ERROR; } void WriteI2c(uint8 *buf, uint8 count) { uint16 i; I2cOpen(); delay_us(DELAY_40_US); I2cStart(); delay_us(DELAY_40_US); for (i = 0; i < count; i++) { I2CWriteData(buf[i]); delay_us(DELAY_40_US); } delay_us(DELAY_40_US); delay_us(DELAY_40_US); I2cClose(); } void Learn_start() { I2cOpen(); I2cStart(); I2CWriteData(0x30); delay_us(DELAY_40_US); I2CWriteData(0x20); delay_us(DELAY_40_US); I2CWriteData(0x50); delay_us(DELAY_40_US); delay_us(DELAY_40_US); I2cClose(); delay_us(DELAY_40_US); delay_ms(DELAY_20_MS);//20ms } void IR_init() { #if 0 P0SEL &= ~0x70; P0DIR |= (1<<4); P0DIR |= (1<<6); P0DIR &= ~(1<<5); P0INP &= ~(1<<5); //P2INP |= (1<<5); #endif P1SEL &= ~(1<<2); P1SEL &= ~(1<<7); P1SEL &= ~(1<<3); P1DIR |= (1<<2); P1DIR |= (1<<7); P1DIR &= ~(1<<3); SDA_OUT_ENABLE; I2C_SCL_H; I2C_SDA_H; } void ir_test() { uint8 get_data_len; IR_init(); Learn_start(); while (GIR_BY==0); ReadI2c(g_buf,&get_data_len); for(;;){ delay_ms(2000); WriteI2c(g_buf,232); } }