#include "l1audio_def.h"
#define READ 1
#define WRITE 0
#define ADRW 0x22
#define ADRR 0x23
#define DURATION_INIT_1 20//600ns
#define DURATION_INIT_2 20//600ns
#define DURATION_INIT_3 20//600ns
#define DURATION_START_1 20//600ns
#define DURATION_START_2 24//600ns
#define DURATION_START_3 24//800ns
#define DURATION_STOP_1 24//800ns
#define DURATION_STOP_2 20//600ns
#define DURATION_STOP_3 50//1300ns
#define DURATION_HIGH 26//900ns
#define DURATION_LOW 70//1600ns
#define POWER_SETTLING 5*1000*80//80ms//50~100ms
/* GPIO definition */
//#define CRYCLK 6 ///32.768 kHz clock请注意修改GPIO_ModeSetup(CRYCLK,*)
//#define CRYCLK_MSK 2 ///设置时钟输出类型, 根据Pin需要作出修改
//#define RST 3 ///LE pin
//#define SDA 47 ///I2C data pin
//#define SCL 48 ///I2C clock pin
extern const char gpio_fm_i2c_sda_pin;
extern const char gpio_fm_i2c_scl_pin;
//extern const char gpio_fm_reset_pin;
extern const char gpio_fm_srclkena_pin;
#define SDA 9//gpio_fm_i2c_sda_pin /// I2C data pin
#define SCL 8//gpio_fm_i2c_scl_pin /// I2C clock pin
#define CRYCLK 26//gpio_fm_srclkena_pin /// crystal clock
//#define RST gpio_fm_reset_pin /// reset//reset pin is fixed, removed by fujia 20080409
uint16 RDAFMChipID;
void GPIO_ModeSetup(kal_uint16 pin, kal_uint16 conf_dada);
void GPIO_InitIO(char direction, char port);
void GPIO_WriteIO(char data,char port);
char GPIO_ReadIO(char port);
#define DELAY(DURATION) {unsigned int i; for(i = 1; i <= (DURATION); i++){}}
uint8 const FM_RADIO_INPUT_LEVEL_THRESHOLD = 5;
void SerialCommStart(void) /* start or re-start */
{
GPIO_InitIO(1,SDA);
GPIO_WriteIO(1,SDA);
GPIO_WriteIO(1,SCL);
DELAY(DURATION_START_1);
GPIO_WriteIO(0,SDA);
DELAY(DURATION_START_2);
GPIO_WriteIO(0,SCL);
DELAY(DURATION_START_3);/* start condition */
}
void SerialCommStop(void)
{
GPIO_WriteIO(0,SCL);
DELAY(DURATION_LOW);
GPIO_InitIO(1,SDA);
GPIO_WriteIO(0,SDA);
DELAY(DURATION_STOP_1);
GPIO_WriteIO(1,SCL);
DELAY(DURATION_STOP_2);
GPIO_WriteIO(1,SDA); /* stop condition */
DELAY(DURATION_STOP_3);
}
uint8 SerialCommTxByte(uint8 data) /* return 0 --> ack */
{
int32 i;
uint8 temp_value = 0;
for(i=7; (i>=0)&&(i<=7); i--){
GPIO_WriteIO( 0, SCL); /* low */
DELAY(DURATION_LOW);
if(i==7)GPIO_InitIO(1,SDA);
DELAY(DURATION_LOW);
GPIO_WriteIO(((data>>i)&0x01), SDA);
DELAY(DURATION_LOW/2);
GPIO_WriteIO( 1, SCL); /* high */
DELAY(DURATION_HIGH);
}
GPIO_WriteIO(0, SCL); /* low */
DELAY(DURATION_LOW);
GPIO_InitIO(0,SDA);/* input */
DELAY(DURATION_LOW/2);
GPIO_WriteIO(1, SCL); /* high */
DELAY(DURATION_HIGH);
temp_value = GPIO_ReadIO(SDA);
//kal_prompt_trace(MOD_MED_V,"SerialCommTxByte() temp_value =%d ,GPIO_DATA=%d ",temp_value,(SDA));
return temp_value;
}
void SerialCommRxByte(uint8 *data, uint8 ack)
{
int32 i;
uint32 dataCache;
dataCache = 0;
for(i=7; (i>=0)&&(i<=7); i--){
GPIO_WriteIO(0, SCL);
DELAY(DURATION_LOW);
if(i==7)GPIO_InitIO(0,SDA);
DELAY(DURATION_LOW);
GPIO_WriteIO(1, SCL);
DELAY(DURATION_HIGH);
dataCache |= (GPIO_ReadIO(SDA)<<i);
DELAY(DURATION_LOW/2);
}
GPIO_WriteIO(0, SCL);
DELAY(DURATION_LOW);
GPIO_InitIO(1,SDA); //释放总线
GPIO_WriteIO(ack, SDA); //回ack信号
DELAY(DURATION_LOW/2);
GPIO_WriteIO(1, SCL);
DELAY(DURATION_HIGH);
*data = (uint8)dataCache;//data为读走的数，存在datacache中
}
void SerialCommInit(void)
{
GPIO_ModeSetup(SCL,0);
GPIO_ModeSetup(SDA,0);
#if (defined(RST))
GPIO_ModeSetup(RST,0);
#endif
GPIO_InitIO(1,SCL);
GPIO_InitIO(1,SDA);
#if (defined(RST))
GPIO_InitIO(1,RST);
#endif
GPIO_WriteIO(1,SCL);
GPIO_WriteIO(1,SDA);
}
void SerialCommCryClkOn(void)
{
// GPIO_ModeSetup(CRYCLK,CRYCLK_MSK); /* 32.768kHz reference frequency */
GPIO_ModeSetup(CRYCLK,3); /* 32.768kHz reference frequency */
}
void SerialCommCryClkOff(void)
{
DELAY(DURATION_LOW);
GPIO_ModeSetup(CRYCLK,0);
GPIO_WriteIO(1,SDA);
GPIO_WriteIO(1,SCL);
}
uint8 OperationRDAFM_2w(uint8 operation, uint8 adr, uint8 *data, uint8 numBytes)
{
uint8 j;
uint8 acknowledge=0;
/***************************************************
START: make sure here SDIO_DIR =OUT, SCLK = 1, SDIO = 1
****************************************************/
SerialCommStart();
acknowledge = SerialCommTxByte(ADRW);
acknowledge = SerialCommTxByte(adr);
/***************************************************
WRITE CONTROL DATA: make sure here: SLCK = 0; SDIO = 0
****************************************************/
/***************************
CHECK ACK for control word
***************************/
if(operation == READ)
{
GPIO_WriteIO( 0, SCL); /* low */
DELAY(DURATION_LOW);
SerialCommStart();
acknowledge = SerialCommTxByte(ADRR);
}
//kal_prompt_trace(MOD_MED_V,"OperationRDAFM_2w lrjaaaaaa acknowledge =%d ",acknowledge);
/***************************************
WRITE or READ data
****************************************/
/******************************
CHECK ACK or SEND ACK=0
*******************************/
for(j = 0; j < numBytes; j++, data++)
{
if(operation == READ)
{
if(j == (numBytes -1))
SerialCommRxByte(data,1);
else
SerialCommRxByte(data,0);
}
else
acknowledge = SerialCommTxByte(*data);
//kal_prompt_trace(MOD_MED_V,"OperationRDAFM_2w numBytes =%d acknowledge=%d,data=%x",numBytes,acknowledge,*data); //lrj add for test 20060522
}
/****************************
STOP: make sure here: SCLK = 0
*****************************/
SerialCommStop();
return acknowledge;
}
/*
uint16 RDAFM_GetChipID(void)
{
uint8 RDAFM_reg_data[6]={0};
uint16 cChipID;
SerialCommInit();
GPIO_WriteIO(0, SCL);
DELAY(DURATION_LOW);
GPIO_WriteIO(1, SCL);
DELAY(DURATION_LOW*30);
#if (defined(RST))
GPIO_WriteIO(0,RST);
DELAY(DURATION_LOW*30);
#endif
GPIO_WriteIO(1,SDA);
GPIO_WriteIO(1,SCL);
RDAFM_reg_data[0]=0x00;
RDAFM_reg_data[1]=0x00;
OperationRDAFM_2w(WRITE,0x02,&(RDAFM_reg_data[0]), 2);
kal_sleep_task(5);
OperationRDAFM_2w(READ,0x0a,&(RDAFM_reg_data[0]), 6);
cChipID=(RDAFM_reg_data[4]*0x100)+ RDAFM_reg_data[5];
if(0x5802==cChipID || 0x5803==cChipID )
{
RDAFMChipID=0x5802;
return(0x5802);
}
SerialCommInit();
#if (defined(RST))
GPIO_WriteIO(0,RST);
DELAY(DURATION_LOW*30);
GPIO_WriteIO(1,RST);
#endif
GPIO_WriteIO(1,SDA);
GPIO_WriteIO(1,SCL);
RDAFM_reg_data[0]=0x00;
RDAFM_reg_data[1]=0x00;
3(WRITE,0x02,&(RDAFM_reg_data[0]), 2);
kal_sleep_task(18);
OperationRDAFM_2w(READ,0x0a,&(RDAFM_reg_data[0]), 6);
cChipID=(RDAFM_reg_data[4]*0x100)+ RDAFM_reg_data[5];
if(0x5800==cChipID)
{
RDAFMChipID=0x5800;
return(0x5800);
}
return(0xFFFF);
}
*/
