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@ -56,8 +56,8 @@
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shared with ESP-32
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shared with ESP-32
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ESP32 Placeholder to solder ESP-32 WROOM module.
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ESP32 Placeholder to solder ESP-32 WROOM module.
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ESP-32 can provide web interface for uploading bitstream
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ESP-32 can provide standalone web interface for uploading
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into FPGA and its config FLASH.
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bitstream into FPGA and its config FLASH.
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Warning on PCB v1.7 ESP-32 must be isolated from all SD
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Warning on PCB v1.7 ESP-32 must be isolated from all SD
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card pins otherwise ESP-32 won't boot no matter if
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card pins otherwise ESP-32 won't boot no matter if
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SD card is inserted or not.
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SD card is inserted or not.
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@ -110,7 +110,7 @@ Switching regulators use ferrite core coils L1,L2,L3 which can saturate
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at magnetic fields above 0.3T. Never approach neodymium magnets
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at magnetic fields above 0.3T. Never approach neodymium magnets
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near powered board.
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near powered board.
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# Programming
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# Programming over USB
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Use ftx_prog to change product/manufacturer name of FT231X chip:
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Use ftx_prog to change product/manufacturer name of FT231X chip:
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@ -141,6 +141,8 @@ When it creates VME file, pass it to FleaFPGA-JTAG argument and wait
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FleaFPGA-JTAG bitstream-flash.vme
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FleaFPGA-JTAG bitstream-flash.vme
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# Programming over JTAG header
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External JTAG like FT2232 can be connected to JTAG header and it will
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External JTAG like FT2232 can be connected to JTAG header and it will
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program SRAM and FLASH at maximum speed possible.
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program SRAM and FLASH at maximum speed possible.
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Even Diamond programmer can use any FT2232 module as a native programmer,
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Even Diamond programmer can use any FT2232 module as a native programmer,
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@ -151,11 +153,15 @@ Openocd accepts SVF files, everything applies the same as for VME files
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ddtcmd -oft -svfsingle -revd -if ulx3s_flash.xcf -of bitstream.svf
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ddtcmd -oft -svfsingle -revd -if ulx3s_flash.xcf -of bitstream.svf
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Programming and flashing from ESP-32 web interface is convenient
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# Programming over WiFi
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(device independent) and much faster than FT231X but still not as fast
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as FT2232. It also accepts SVF files, only you need to limit SVF command
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ESP-32 provides standalone JTAG SVF player over web HTTP and TCP interface for
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size to max 8 kilobits "-maxdata 8" because ESP-32 doesn't have enough
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programming and flashing in convenient and OS independent way. Web interface
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memory to buffer entire bitstream.
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requires no client software installed except web browser. It is much faster than
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FT231X but still not as fast as FT2232. It accepts SVF files but you need to limit
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SVF command size to max 8 kilobits "-maxdata 8", effectively it will split
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upload into many shorter SVF commands because ESP-32 doesn't have enough
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memory to buffer entire bitstream delivered in a long single SVF command.
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ddtcmd -oft -svfsingle -revd -maxdata 8 -if ulx3s_flash.xcf -of bitstream.svf
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ddtcmd -oft -svfsingle -revd -maxdata 8 -if ulx3s_flash.xcf -of bitstream.svf
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davor
7 years ago