[参考译文] CCS/AFE4900EVM：AFE4900初始版本

https://e2e.ti.com/support/data-converters-group/data-converters/f/data-converters-forum/767519/ccs-afe4900evm-afe4900-initial

工具/软件：Code Composer Studio

大家好、我下载 TIDCEM3A-TIDA-01580固件。 我使用 AFE4900_Reg_Init( IIC 接口)的一部分。 但它不起作用。  我还应该注意什么？

I2C_Params_init (&i2cParams)；
i2cParams.bitrate = I2C_100kHz；
I2C_4900 = I2C_open (Board_I2C_TMP、&i2cParams)；
if (i2c_4900 =NULL)｛
LOG_info0 ("初始化 I2C\n"\n 时出错")；
while (1)；
｝
否则｛
log_info0 ("I2C initialized!\n");
｝

PIN_setOutputValue (userGPIOpinHandle、PIN_AFE_RESETZ、1)；
Task_sleep (500)；
PIN_setOutputValue (userGPIOpinHandle、PIN_AFE_RESETZ、0)；
Task_sleep (500)；
PIN_setOutputValue (userGPIOpinHandle、PIN_AFE_RESETZ、1)；
Task_sleep (500)；

if (PIN_registerIntCb (userGPIOpinHandle、pinIntHandler)！= PIN_SUCCESS)｛
/*注册按钮回调函数时出错*/
while (1)；
｝

// initStatHRM()；//初始化 HRM 变量

SEM_adcRdy_risingEdge = SemaphoreP_createBinary (1)；
if (SEM_adcRdy_risingEdge =NULL)
｛
while (1)；
｝

I=0；
while (AFE_PPG_ECG_REG_ARR[i]！= 0xFF)｛
AFE4900_Reg_Write (AFE_PPG_ECG_REG_ARR[i]、AFE_PPG_ECG_REG_ARR[i])；
if (AFE_PPG_ECG_REG_ARR[i]=0x4E)｛
if (((AFE_PPG_ECG_REG_ARR[i]>> 12)& 1)｛//获取导联脱落位
leadOffMode = leadoff_mode_ac；
｝否则｛
leadOffMode = leadoff_mode_DC；
｝
｝
i++；
｝

AFE4900_Reg_Init 无效(空)
｛
// AFE4900_Reg_Write (0、0x20)；//启用 ULP 模式
AFE4900_Reg_Write (1、0xB)；//AFE_LED2STC
AFE4900_Reg_Write (2、0xD)；//AFE_LED2ENDC
AFE4900_Reg_Write (3、0x14)；//AFE_LED1LEDSTC
AFE4900_Reg_Write (4、0x17)；//AFE_LED1LEDENDC
AFE4900_Reg_Write (5、0x10)；//AFE_ALED2STC
AFE4900_Reg_Write (6、0x12)；//AFE_ALED2ENDC
AFE4900_Reg_Write (7、0x15)；//AFE_LED1STC
AFE4900_Reg_Write (8、0x17)；//AFE_LED1ENDC
AFE4900_Reg_Write (9、0xA)；//AFE_LED2LEDSTC
AFE4900_Reg_Write (10、0xD)；//AFE_LED2LEDENDC
AFE4900_Reg_Write (11、0x1A)；//AFE_ALED1STC
AFE4900_Reg_Write (12、0x1C)；//AFE_ALED1ENDC
AFE4900_Reg_Write (13、0xF)；//AFE_LED2CONVST
AFE4900_Reg_Write (14、0x12)；//AFE_LED2CONVEND
AFE4900_Reg_Write (15、0x14)；//AFE_ALED2CONVST
AFE4900_Reg_Write (16、0x17)；//AFE_ALED2CONVEND
AFE4900_Reg_Write (17、0x19)；//AFE_LED1CONVST
AFE4900_Reg_Write (18、0x1C)；//AFE_LED1CONVEND
AFE4900_Reg_Write (19、0x1E)；//AFE_ALED1CONVST
AFE4900_Reg_Write (20、0x21)；//AFE_ALED1CONVEND
///AFE4900_Reg_Write (21、0x30000)；//AFE_ADCRSTCT0
// AFE4900_Reg_Write (22、0x30000)；// AFE_ADCRSTENDCT0
//AFE4900_Reg_Write (23、0x30000)；//AFE_ADCRSTCT1
///AFE4900_Reg_Write (24、0x30000)；//AFE_ADCRSTENDCT1
//AFE4900_Reg_Write (25、0x30000)；//AFE_ADCRSTCT2
//AFE4900_Reg_Write (26、0x30000)；//AFE_ADCRSTENDCT2
//AFE4900_Reg_Write (27、0x30000)；//AFE_ADCRSTCT3
//AFE4900_Reg_Write (28、0x30000)；//AFE_ADCRSTENDCT3

AFE4900_Reg_Write (29、0x3F)；//AFE_PRPCOUNT // 50Hz PRP @ 128KHz 内部 OSC CLK

AFE4900_Reg_Write (30、0x000101)；//AFE_CONTROL1 TimerEN = 1；NUMAV = 0

AFE4900_Reg_Write (32、0x000003)；//AFE_TIA_SEP_GAIN (LED2) ENSEPGAIN = 0；LED2/LED3 GAIN = 25K
AFE4900_Reg_Write (33、0x000003)；//AFE_TIA_GAIN (LED1) LED1/LED1AMB GAIN = 25K

AFE4900_Reg_Write (34、0x0030C3)；//LED3；LED2；LED1
//CONTROL_DYN_TX (0)、LEDCURR = 100mA、CONTROL_DYN_BIAS、ENABLE_OSC = 0、CONTROL_DYN_TIA、 CONTROL_DYN_ADC
AFE4900_Reg_Write (35、0x124018 /*|(1<<9)*/)；//AFE_CONTROL2
// AFE4900_Reg_Write (75、0x0F)；// CONTROL_DYN_VCM / CONTROL_DYN_DLDO / CONTROL_DYN_ALDO / CONTROL_DYN_DYN_BG
// AFE4900_Reg_Write (80、0x18)；// CONTROL_DYN_TX (1)

AFE4900_Reg_Write (49、0x20)；//enable_input_short = 1.

AFE4900_Reg_Write (50、0)；//PDNCYCLESTC
AFE4900_Reg_Write (51、0)；//PDNCYCLEENDC

AFE4900_Reg_Write (54、0xF)；//AFE_LED3LEDSTC
AFE4900_Reg_Write (55、0x12)；//AFE_LED3LEDENDC

AFE4900_Reg_Write (57、0)；//CLKDIV_PRF
AFE4900_Reg_Write (57、0X100000)；//OFFDAC
AFE4900_ReG_Write (97、0x080000)；//ECG CHOP
AFE4900_Reg_Write (98、0x800000)；//ECG RLD
AFE4900_Reg_Write (78、0x000004)；//双 PD

AFE4900_Reg_Write (67、0x19)；//AFE_LED4LEDSTC
AFE4900_Reg_Write (68、0x1C)；//AFE_LED4LEDENDC

AFE4900_Reg_Write (82、0x27)；//DATA_RDY_STC
AFE4900_Reg_Write (83、0x27)；//DATA_RDY_ENDC

AFE4900_Reg_Write (100、0)；//DYN_TIA_STC
AFE4900_Reg_Write (101、0x23)；//DYN_TIA_ENDC
AFE4900_Reg_Write (102、0)；//DYN_ADC_STC
AFE4900_Reg_Write (103、0x23)；//DYN_ADC_ENDC
AFE4900_Reg_Write (104、0)；//DYN_CLOCK _STC
AFE4900_Reg_Write (105、0x23)；//DYN_CLOCK_ENDC
AFE4900_Reg_Write (106、0x2E)；//deep_sleep_STC
AFE4900_Reg_Write (107、0x38)；//deep_sleep_ENDC
// AFE4900_Reg_Write (0、0x21)；//启用 ULP 模式和 SPI_Read 模式
｝