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Cleanup for VerifyChipID logic.

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This commit is contained in:
gstellenberg
2009-10-25 15:24:33 -05:00
parent 9550ba1223
commit a6ac5122e5
2 changed files with 11 additions and 8 deletions
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17
src/PRDevice.cpp
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@@ -823,8 +823,15 @@ PRResult PRDevice::Open()
// the verify still fails, do a bunch of flushes.
res = FlushReadBuffer();
uint32_t verify_ctr = 0;
res = kPRSuccess;
while (VerifyChipID() == kPRFailure && verify_ctr++ < 50) {
res = VerifyChipID();
while (res == kPRFailure && verify_ctr++ < 50) {
// Only send init pattern once.
if (verify_ctr == 1) {
temp_word = P_ROC_INIT_PATTERN_A;
res = WriteData(&temp_word, 1);
temp_word = P_ROC_INIT_PATTERN_B;
res = WriteData(&temp_word, 1);
}
// Since the FPGA didn't appear to be responding properly, send the FPGA's FTDI
// initialization sequence. This is a set of bytes the FPGA is waiting to receive
// before it allows access deeper into the chip. This keeps garbage from getting
@@ -833,10 +840,6 @@ PRResult PRDevice::Open()
DEBUG(PRLog(kPRLogInfo, "Initializing P-ROC...\n"));
res = FlushReadBuffer();
PRSleep(100);
temp_word = P_ROC_INIT_PATTERN_A;
res = WriteData(&temp_word, 1);
temp_word = P_ROC_INIT_PATTERN_B;
res = WriteData(&temp_word, 1);
res = VerifyChipID();
if (res == kPRFailure)
DEBUG(PRLog(kPRLogWarning, "Unable to read Chip ID - P-ROC could not be initialized.\n"));
@@ -1074,7 +1077,7 @@ PRResult PRDevice::FlushReadBuffer()
//uint32_t rd_buffer[3];
numBytes = CollectReadData();
k = 0;
DEBUG(PRLog(kPRLogError, "Flushing Read Buffer\n", rc));
DEBUG(PRLog(kPRLogError, "Flushing Read Buffer: %d bytes trashed\n", numBytes));
//while (k < numBytes) {
// rc = ReadData(rd_buffer, 1);