#include?“bsp.h“


#define?GPIO_NUM_ADS1148_CS?????????????GPIO_NUM_P13
#define?GPIO_NUM_ADS1148_SCLK???????????GPIO_NUM_P35
#define?GPIO_NUM_ADS1148_MISO???????????GPIO_NUM_P33
#define?GPIO_NUM_ADS1148_MOSI???????????GPIO_NUM_P03
#define?GPIO_NUM_ADS1148_DRDY???????????GPIO_NUM_P04
#define?GPIO_NUM_ADS1148_START??????????GPIO_NUM_P56

#define?ADS1148_SPI_CS（data）????????????GPIO_OutData（GPIO_NUM_ADS1148_CS?data）
#define?ADS1148_SPI_SCLK（data）??????????GPIO_OutData（GPIO_NUM_ADS1148_SCLK?data）
#define?ADS1148_SPI_MOSI（data）??????????GPIO_OutData（GPIO_NUM_ADS1148_MOSI?data）
#define?ADS1148_SPI_MISO????????????????GPIO_GetIn（GPIO_NUM_ADS1148_MISO）
#define?ADS1148_START（data）?????????????GPIO_OutData（GPIO_NUM_ADS1148_START?data）
#define?ADS1148_DRDY_STATUS?????????????GPIO_GetIn（GPIO_NUM_ADS1148_DRDY）

#define?ADS1148_SAMPLE_MAX_TIMES????????6

enum?ADS1148_COMMAND
{
????ADS1148_CMD_WAKEUP??=?0x00
????ADS1148_CMD_SLEEP???=?0x02
????ADS1148_CMD_SYNC_1??=?0x04
????ADS1148_CMD_SYNC_2??=?0x05
????ADS1148_CMD_RESET???=?0x06
????ADS1148_CMD_NOP?????=?0xFF
????ADS1148_CMD_RDATA???=?0x12
????ADS1148_CMD_RDATAC??=?0x14
????ADS1148_CMD_SDATAC??=?0x16
????ADS1148_CMD_RREG????=?0x20
????ADS1148_CMD_WREG????=?0x40
????ADS1148_CMD_SYSOCAL?=?0x60
????ADS1148_CMD_SYSGCAL?=?0x61
????ADS1148_CMD_SELFCAL?=?0x62?
????ADS1148_CMD_Restrict?=?0xF1????//restricted?command?must?never?be?issued?to?the?device.
};

enum?ADS1148_REGISTER_ADDRESS
{
????ADS1148_REG_ADDR_MUX0?=?0x00
????ADS1148_REG_ADDR_VBIAS
????ADS1148_REG_ADDR_MUX1
????ADS1148_REG_ADDR_SYS0
????ADS1148_REG_ADDR_OFC0
????ADS1148_REG_ADDR_OFC1
????ADS1148_REG_ADDR_OFC2
????ADS1148_REG_ADDR_FSC0
????ADS1148_REG_ADDR_FSC1
????ADS1148_REG_ADDR_FSC2
????ADS1148_REG_ADDR_IDAC0
????ADS1148_REG_ADDR_IDAC1
????ADS1148_REG_ADDR_GPIOCFG
????ADS1148_REG_ADDR_GPIODIR?
????ADS1148_REG_ADDR_GPIODAT
};


void?ADS1148_Pin_Init（）
{
????GPIO_SetOut（GPIO_NUM_ADS1148_CS?GPIO_Out1）;
????GPIO_SetOut（GPIO_NUM_ADS1148_SCLK?GPIO_Out1）;
????GPIO_SetOut（GPIO_NUM_ADS1148_MOSI?GPIO_Out1）;
????GPIO_SetIn（GPIO_NUM_ADS1148_MISO）;
????GPIO_SetIn（GPIO_NUM_ADS1148_DRDY）;
????GPIO_SetOut（GPIO_NUM_ADS1148_START?GPIO_Out0）;
}

UINT8?ADS1148_SendByte（UINT8?byte）
{
????UINT8?i?num?=?0;
??
????for（i=0;?i<8;?i++）
????{
????	num?<<=?1;
????????ADS1148_SPI_SCLK（1）;
????????delay_2us（1）;
????	if（（byte?&?0x80）>>7）
????	{
????????????ADS1148_SPI_MOSI（1）;
????	}
????	else
????	{
????????????ADS1148_SPI_MOSI（0）;
????	}
????????
????????if（ADS1148_SPI_MISO）
????	{
????		num++;	
????	}
????????ADS1148_SPI_SCLK（0）;
????????delay_2us（1）;
????	byte?<<=?1;
????}
????return?num;
}

UINT16?ADS1148_SendHalfWord（UINT16?byte）
{
????UINT16?num?=?0;
????UINT8?i;

????for（i=0;?i<16;?i++）
????{
????????num?<<=?1;
????????ADS1148_SPI_SCLK（1）;
????????delay_2us（1）;
????????if（（byte?&?0x8000）>>15）
????????{
????????????ADS1148_SPI_