uint16_t rdwr_vcon_pot(uint8_t *val, CyBool_t write) {
uint16_t status;
CyU3PI2cPreamble_t preamble;
preamble.length = 1;
uint8_t addr = UXN1330_VCON_POT;
if (!write) {
addr |= 1; // read
}
preamble.buffer[0] = addr;
preamble.ctrlMask = 0x0000;
if (write) {
status = CyU3PI2cTransmitBytes(&preamble, val, 1, 1);
} else {
status = CyU3PI2cReceiveBytes(&preamble, val, 1, 1);
}
if(status) {
log_debug ( "vcon_pot CyU3PI2c status: %d\n", status );
return status;
/* Wait for the write to complete. */
preamble.length = 1;
status = CyU3PI2cWaitForAck(&preamble, 200);
if(status) {
log_error( "CyU3PI2cWaitForAck fail %d\n", status );
return status;
}
}
return 0;
}
CyBool_t handle_serial_num(uint8_t bReqType, uint16_t wLength) {
CyU3PI2cPreamble_t preamble;
uint32_t reg_addr = FX3_PROM_SERIALNUM0_0;
uint8_t dev_addr = 0x50;
uint8_t size = 17; // size of prom
uint16_t status;
if (wLength != 16) {
log_error("Bad length=%d \n", wLength);
return CY_U3P_ERROR_BAD_ARGUMENT;
}
switch(bReqType) {
case 0xC0:
preamble.length = 4;
preamble.buffer[0] = m24xx_get_dev_addr(dev_addr, reg_addr, size, 0);
preamble.buffer[1] = (uint8_t)(reg_addr >> 8);
preamble.buffer[2] = (uint8_t)(reg_addr & 0xFF);
preamble.buffer[3] = m24xx_get_dev_addr(dev_addr, reg_addr, size, 1);
preamble.ctrlMask = 0x0004;
status = CyU3PI2cReceiveBytes (&preamble, gSerialNum, 16, 1);
if(status) {
log_error("Error reading serial num from prom (%d)\n", status);
return CyFalse;
}
status = CyU3PUsbSendEP0Data(16, gSerialNum);
if(status) {
log_error("Error Sending serial num to EP0 (%d)\n", status);
return CyFalse;
}
return CyTrue;
case 0x40:
status = CyU3PUsbGetEP0Data(wLength, gSerialNum, 0);
if(status) {
log_error("Error getting serial num from EP0 (%d)\n", status);
return status;
}
preamble.length = 3;
preamble.buffer[0] = m24xx_get_dev_addr(dev_addr, reg_addr, size, 0);
preamble.buffer[1] = (uint8_t)(reg_addr >> 8);
preamble.buffer[2] = (uint8_t)(reg_addr & 0xFF);
preamble.ctrlMask = 0x0000;
status = CyU3PI2cTransmitBytes(&preamble, gSerialNum, 16, 1);
if(status) {
log_error("Error writing serial num to I2C (%d)\n", status);
return CyFalse;
}
/* Wait for the write to complete. */
preamble.length = 1;
status = CyU3PI2cWaitForAck(&preamble, 200);
if(status) {
log_error("Error waiting for i2c ACK after writing serial num (%d)\n", status);
return CyFalse;
}
/* An additional delay seems to be required after receiving an ACK. */
CyU3PThreadSleep (1);
return CyTrue;
default:
log_error("Bad ReqType=%d \n", bReqType);
return CY_U3P_ERROR_BAD_ARGUMENT;
}
}
