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NX family tweaks #15

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NX family tweaks #15

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cb03b3f
nx: fix reboot
SylvainLesne Oct 14, 2022
e9d4044
program: improve FPGA reset sequence
SylvainLesne Oct 14, 2022
792421a
nx: improve SRAM programming
SylvainLesne Oct 14, 2022
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11 changes: 9 additions & 2 deletions ecpprog/ecpprog.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1121,7 +1121,9 @@ int main(int argc, char **argv)
// Reset
// ---------------------------------------------------------
fprintf(stderr, "reset..\n");

if(connected_device.type == TYPE_NX){
ecp_jtag_cmd(LSC_REFRESH);
}
ecp_jtag_cmd8(ISC_ENABLE, 0);
ecp_jtag_cmd8(ISC_ERASE, 0);
ecp_jtag_cmd8(LSC_RESET_CRC, 0);
Expand Down Expand Up @@ -1163,7 +1165,9 @@ int main(int argc, char **argv)
fprintf(stderr, "reset..\n");
/* Reset ECP5 to release SPI interface */
ecp_jtag_cmd8(ISC_ENABLE, 0);
usleep(10000);
ecp_jtag_cmd8(ISC_ERASE, 0);
usleep(10000);
ecp_jtag_cmd8(ISC_DISABLE, 0);

/* Put device into SPI bypass mode */
Expand Down Expand Up @@ -1291,8 +1295,11 @@ int main(int argc, char **argv)
}

if (reinitialize) {
fprintf(stderr, "rebooting ECP5...\n");
fprintf(stderr, "rebooting FPGA...\n");
ecp_jtag_cmd(LSC_REFRESH);
if(connected_device.type == TYPE_NX){
ecp_jtag_cmd(ISC_NOOP);
}
}

if (f != NULL && f != stdin && f != stdout)
Expand Down