CyU3PReturnStatus_t NuandLockOtp() {
CyU3PReturnStatus_t status = CY_U3P_SUCCESS;
uint8_t location[1];
uint8_t read_status;
status = FlashReadStatus(&read_status);
location[0] = 0x06; /* Write enable. */
status = CyU3PSpiSetSsnLine (CyFalse);
status = CyU3PSpiTransmitWords (location, 1);
status = CyU3PSpiSetSsnLine (CyTrue);
status = FlashReadStatus(&read_status);
location[0] = 0x2f;// WRSCUR
status = CyU3PSpiSetSsnLine (CyFalse);
status = CyU3PSpiTransmitWords (location, 1);
status = CyU3PSpiSetSsnLine (CyTrue);
location[0] = 0x02;// Page program
status = CyU3PSpiSetSsnLine (CyFalse);
status = CyU3PSpiTransmitWords (location, 1);
status = CyU3PSpiSetSsnLine (CyTrue);
location[0] = 0x2b; /* RDSCUR */
status = CyU3PSpiSetSsnLine (CyFalse);
status = CyU3PSpiTransmitWords (location, 1);
status = CyU3PSpiReceiveWords(location, 1);
status = CyU3PSpiSetSsnLine (CyTrue);
return status;
}
static CyU3PReturnStatus_t FlashReadStatus(uint8_t *val)
{
int status;
uint8_t read_status = 0x05; /* RDSTATUS */
status = CyU3PSpiSetSsnLine (CyFalse);
status = CyU3PSpiTransmitWords (&read_status, 1);
status = CyU3PSpiReceiveWords(val, 1);
status = CyU3PSpiSetSsnLine (CyTrue);
return status;
}
CyU3PReturnStatus_t NuandExso() {
CyU3PReturnStatus_t status = CY_U3P_SUCCESS;
uint8_t location[1];
location[0] = 0xc1; // EXSO
status = CyU3PSpiSetSsnLine (CyFalse);
status = CyU3PSpiTransmitWords (location, 1);
status = CyU3PSpiSetSsnLine (CyTrue);
return status;
}
static void step(int direction) {
const uint8_t full_fwd_step[] = {
//0355, 0345, 0344, 0354 // low
0333, 0332, 0322, 0323 // medium
//0311, 0301, 0300, 0310, // high
};
s_index += direction;
if (s_index < 0) {
s_index = sizeof(full_fwd_step) - 1;
} else if (s_index >= sizeof(full_fwd_step)) {
s_index = 0;
}
CyU3PSpiTransmitWords((uint8_t *)&full_fwd_step[s_index], 1);
CyU3PThreadSleep(10);
}
