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jtag: shiftxR: don't try to move to shift when not required

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This commit is contained in:
Gwenhael Goavec-Merou
2021-05-15 09:05:48 +02:00
parent 5da47a0200
commit a242168e7f
2 changed files with 42 additions and 17 deletions
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src/altera.cpp
+3 -6
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@@ -65,9 +65,6 @@ void Altera::programMem()
/* write */
ProgressBar progress("Flash SRAM", byte_length, 50, _quiet);
/* 2.2.6.5 */
_jtag->set_state(Jtag::SHIFT_DR);
int xfer_len = 512;
int tx_len;
int tx_end;
@@ -75,12 +72,12 @@ void Altera::programMem()
for (int i=0; i < byte_length; i+=xfer_len) {
if (i + xfer_len > byte_length) { // last packet with some size
tx_len = (byte_length - i) * 8;
tx_end = 1; // to move in EXIT1_DR
tx_end = Jtag::EXIT1_DR;
} else {
tx_len = xfer_len * 8;
tx_end = 0;
tx_end = Jtag::SHIFT_DR;
}
_jtag->read_write(data+i, NULL, tx_len, tx_end);
_jtag->shiftDR(data+i, NULL, tx_len, tx_end);
progress.display(i);
}
progress.done();