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Merge pull request #679 from gzalo/add-usb-blaster-passive-serial

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Add Passive Serial mode for USB Blaster (Altera/Intel)
This commit is contained in:
Gwenhael Goavec-Merou
2026-07-12 14:07:03 +02:00
committed by GitHub
parent d52abf7059 aab38dd51e
commit 36c57a6535
5 changed files with 195 additions and 4 deletions
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src/main.cpp
+46 -2
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@@ -57,6 +57,9 @@
#include "progressBar.hpp"
#include "spiFlash.hpp"
#include "rawParser.hpp"
#ifdef ENABLE_USBBLASTER
#include "usbBlaster.hpp"
#endif
#ifdef ENABLE_XILINX_SUPPORT
#include "xilinx.hpp"
#endif
@@ -93,6 +96,7 @@ struct arguments {
bool is_list_command;
bool spi;
bool dfu;
bool passive_serial;
std::string file_type;
std::string fpga_part;
std::string bridge_path;
@@ -157,8 +161,8 @@ int main(int argc, char **argv)
false, false, false, false, false,
0, "", "", "", "-", "", -1,
-1, 0, false, "-", false, false, false, false, Device::PRG_NONE, false,
/* spi dfu file_type fpga_part bridge_path probe_firmware */
false, false, "", "", "", "",
/* spi dfu passive_serial file_type fpga_part bridge_path probe_firmware */
false, false, false, "", "", "", "",
/* index_chain file_size target_flash external_flash spi_flash_type altsetting */
-1, 0, "primary", false, true, -1,
/* vid, pid, index bus_addr, device_addr */
@@ -381,6 +385,36 @@ int main(int argc, char **argv)
}
#endif
/* ------------------------------ */
/* USB-Blaster passive serial mode */
/* ------------------------------ */
if (args.passive_serial) {
#ifdef ENABLE_USBBLASTER
if (cable.type != MODE_USBBLASTER) {
printError("Passive serial mode requires a USB-Blaster cable");
return EXIT_FAILURE;
}
try {
RawParser bit(args.bit_file, false);
if (bit.parse() != EXIT_SUCCESS)
throw std::runtime_error("Failed to parse raw RBF file");
UsbBlaster blaster(cable, args.probe_firmware, args.verbose);
blaster.programPassiveSerial(bit.getData(), bit.getLength() / 8);
} catch (std::exception &e) {
printError("Passive serial programming failed: " + std::string(e.what()));
return EXIT_FAILURE;
}
printSuccess("Passive serial programming DONE");
return EXIT_SUCCESS;
#else
printError("USB-Blaster support was not enabled at compile time");
return EXIT_FAILURE;
#endif
}
/* jtag base */
@@ -941,6 +975,8 @@ int parse_opt(int argc, char **argv, struct arguments *args,
("detect", "detect FPGA, add -f to show connected flash",
cxxopts::value<bool>(args->detect))
("dfu", "DFU mode", cxxopts::value<bool>(args->dfu))
("passive-serial", "USB-Blaster passive serial mode",
cxxopts::value<bool>(args->passive_serial))
("dump-flash", "Dump flash mode")
("bulk-erase", "Bulk erase flash",
cxxopts::value<bool>(args->bulk_erase_flash))
@@ -1111,6 +1147,14 @@ int parse_opt(int argc, char **argv, struct arguments *args,
else if (result.count("external-flash"))
args->prg_type = Device::WR_FLASH;
if (args->passive_serial) {
if (args->spi || args->dfu || args->xvc || args->detect) {
printError("Error: --passive-serial cannot be combined with "
"--spi, --dfu, --xvc or --detect");
return -1;
}
}
if (result.count("freq")) {
double freq;
if (parse_eng(freqo, &freq)) {