PGA460: 我直接将F5529和PGA460的串口连接，并使用串口通信UART读取EPROM中的数据，为什么返回的数据一直是FF

user6477655

Part Number: PGA460

这是代码

pga460 ussc;
byte edd = 2; // echo data dump of preset 1, 2, or neither
byte echoDataDumpElement = 0; // echo data dump element 0 to 127
void setup() {
// put your setup code here, to run once:
initPGA460();
}
void initPGA460()
{
int inByte=0;
Serial.begin(9600);
delay(1000);
ussc.initBoostXLPGA460(0, 9600, 0);
ussc.registerWrite(0x14, 0xAF);
ussc.registerWrite(0x15, 0xFF);
ussc.registerWrite(0x16, 0xFF);
ussc.registerWrite(0x17, 0x2D);
ussc.registerWrite(0x18, 0x68);
ussc.registerWrite(0x19, 0x36);
ussc.registerWrite(0x1A, 0xFC);
ussc.registerWrite(0x1B, 0x31);
ussc.registerWrite(0x1C, 0x8C);
ussc.registerWrite(0x1D, 0x00);
ussc.registerWrite(0x1E, 0x01);
ussc.registerWrite(0x1F, 0x12);
Serial.print("TVGAIN0:");
Serial.print(ussc.registerRead(0x14),HEX);
Serial.print("\nTVGAIN1:");
Serial.print(ussc.registerRead(0x15),HEX);
Serial.print("\nTVGAIN2:");
Serial.print(ussc.registerRead(0x16),HEX);
Serial.print("\nTVGAIN3:");
Serial.print(ussc.registerRead(0x17),HEX);
Serial.print("\nTVGAIN4:");
Serial.print(ussc.registerRead(0x18),HEX);
Serial.print("\nTVGAIN5:");
Serial.print(ussc.registerRead(0x19),HEX);
Serial.print("\nTVGAIN6:");
Serial.print(ussc.registerRead(0x1A),HEX);
Serial.print("\nINIT_GAIN:");
Serial.print(ussc.registerRead(0x1B),HEX);
Serial.print("\nFREQUENCY:");
Serial.print(ussc.registerRead(0x1C),HEX);
Serial.print("\nDEADTIME:");
if (edd != 0) // run or skip echo data dump
{
Serial.println("Retrieving echo data dump profile. Wait...");
ussc.runEchoDataDump(edd-1); // run preset 1 or 2 burst and/or listen command
for(int n=0; n<128; n++) // get all echo data dump results
{
echoDataDumpElement = ussc.pullEchoDataDump(n);
Serial.print(echoDataDumpElement);
Serial.print(",");
}
}
}