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JTAG state machine #379

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JTAG state machine #379

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3 changes: 0 additions & 3 deletions src/gowin.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1076,7 +1076,6 @@ int Gowin::spi_put_gw5a(const uint8_t cmd, const uint8_t *tx, uint8_t *rx,
// set TMS/CS high by moving to a state where TMS == 1
_jtag->set_state(Jtag::TEST_LOGIC_RESET, curr_tdi);
_jtag->toggleClk(5); // Required ?
_jtag->flushTMS(true);
if (rx) { // Reconstruct read sequence and drop first 3bits.
for (uint32_t i = 0; i < len; i++)
rx[i] = FsParser::reverseByte((jrx[i] >> 3) |
Expand Down Expand Up @@ -1148,7 +1147,6 @@ bool Gowin::gw5a_disable_spi()
*/
_jtag->setWriteEdge(_prev_wr_edge);
_jtag->setReadEdge(_prev_rd_edge);
_jtag->flushTMS(true);
_jtag->flush();
// 1. sent 15 TMS pulse
// TEST_LOGIC_RESET to SELECT_DR_SCAN: 01
Expand All @@ -1167,7 +1165,6 @@ bool Gowin::gw5a_disable_spi()
_jtag->set_state(Jtag::EXIT1_DR); // 01 : 16
_jtag->set_state(Jtag::PAUSE_DR); // 0

_jtag->flushTMS(true);
_jtag->flush();
// 2. 8 TCK clock cycle with TMS=1
_jtag->set_state(Jtag::TEST_LOGIC_RESET); // 5 cycles
Expand Down
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