OTP定制数据读

I'm trying to read OTP memory with the following code:
int cnt = 100000;
SetBits16(CLK_AMBA_REG, OTP_ENABLE, 1); // enable OTP clock
while ((GetWord16(ANA_STATUS_REG) & LDO_OTP_OK) != LDO_OTP_OK && cnt--)
// set OTP in read mode
SetWord32(OTPC_MODE_REG, 0x1);
uint8_t *otp_major = (uint8_t *)0x47F54;
uint8_t *otp_minor = (uint8_t *)0x47F58;
memcpy(&user_beacon_config.major_ALT_val1, otp_major, 2);
memcpy(&user_beacon_config.minor_ALT_val2, otp_minor, 2);
SetBits16(CLK_AMBA_REG, OTP_ENABLE, 0); //disable OTP clock

I've written data to the OTP address 7F54: 6C 7F55: 00 7F56: 00 7F57: 00 7F58: 00 using the PLT

but it seems when the program is running, it's not grabbing the data correctly. My advertisement strings show both major and minor to be 0.

Alternatively to test this, can I just write the custom data field with values I want and leave the rest of the OTP header fields intact for programming at a later time? Field such as 32kHz field selection, BD Address, etc...?