2013-04-01 18:49 GMT+02:00 Stefan Tauner stefan.tauner@student.tuwien.ac.at:
Increase PIC/FT232 UART speed to 2 Mbaud (instead of 115200 baud) in firmware 5.5 and newer. Given that UART speed is the biggest bottleneck for Bus Pirate communication (right now 90% of the read time is caused by slow BP<->host communication), this patch is absolutely needed to get any decent speed out of the Bus Pirate.
WARNING: This patch may hang flashrom or corrupt data for any non-v3 Bus Pirate model. I haven't tested such models, and it might work without problems. Who knows. We would have to find someone with a v2 (or earlier) Bus Pirate and a firmware version >=v5.5 to test this. For Bus Pirate model v4 this patch may be completely superfluous. Anyway, activating fast UART only for some models is probably the way to go. We already have code to determine the hardware model in the init function, this just needs to be stored in some variable.
I've applied this patch but it doesn't use 2Mbaud on my buspirate v3.a with firmware v6.3-beta1 r2088 or v6.3-beta1 r2151, nor will it proceed to probing. Platforms used are linux and windows.
flashrom v0.9.7-r1764 on Linux 3.10-3-amd64 (x86_64) flashrom is free software, get the source code at http://www.flashrom.org
flashrom was built with libpci 3.2.1, GCC 4.8.2, little endian Command line (5 args): ./flashrom -VVV -p buspirate_spi:dev=/dev/ttyUSB0 -r buspirate_read.bin Calibrating delay loop... OS timer resolution is 1 usecs, 945M loops per second, 10 myus = 12 us, 100 myus = 119 us, 1000 myus = 1187 us, 10000 myus = 11863 us, 4 myus = 5 us, OK. Initializing buspirate_spi programmer Baud rate is 115200 now. buspirate_sendrecv: write 1, read 0 Sending 0x00 buspirate_sendrecv: write 1, read 0 Sending 0x00 buspirate_sendrecv: write 1, read 0 Sending 0x00 buspirate_sendrecv: write 1, read 0 Sending 0x00 buspirate_sendrecv: write 1, read 0 Sending 0x00 buspirate_sendrecv: write 1, read 0 Sending 0x00 buspirate_sendrecv: write 1, read 0 Sending 0x00 buspirate_sendrecv: write 1, read 0 Sending 0x00 buspirate_sendrecv: write 1, read 0 Sending 0x00 buspirate_sendrecv: write 1, read 0 Sending 0x00 buspirate_sendrecv: write 1, read 0 Sending 0x00 buspirate_sendrecv: write 1, read 0 Sending 0x00 buspirate_sendrecv: write 1, read 0 Sending 0x00 buspirate_sendrecv: write 1, read 0 Sending 0x00 buspirate_sendrecv: write 1, read 0 Sending 0x00 buspirate_sendrecv: write 1, read 0 Sending 0x00 buspirate_sendrecv: write 1, read 0 Sending 0x00 buspirate_sendrecv: write 1, read 0 Sending 0x00 buspirate_sendrecv: write 1, read 0 Sending 0x00 buspirate_sendrecv: write 1, read 0 Sending 0x00 buspirate_sendrecv: write 0, read 4 , receiving 0x42 0x42 0x49 0x4f buspirate_sendrecv: write 1, read 0 Sending 0x0f buspirate_sendrecv: write 0, read 6 , receiving 0x31 0x01 0x0d 0x0a 0x42 0x75 buspirate_sendrecv: write 0, read 1 , receiving 0x73 buspirate_sendrecv: write 0, read 1 , receiving 0x20 buspirate_sendrecv: write 0, read 1 , receiving 0x50 buspirate_sendrecv: write 0, read 1 , receiving 0x69 buspirate_sendrecv: write 0, read 1 , receiving 0x72 buspirate_sendrecv: write 0, read 1 , receiving 0x61 buspirate_sendrecv: write 0, read 1 , receiving 0x74 buspirate_sendrecv: write 0, read 1 , receiving 0x65 buspirate_sendrecv: write 0, read 1 , receiving 0x20 buspirate_sendrecv: write 0, read 1 , receiving 0x76 buspirate_sendrecv: write 0, read 1 , receiving 0x33 buspirate_sendrecv: write 0, read 1 , receiving 0x2e buspirate_sendrecv: write 0, read 1 , receiving 0x61 buspirate_sendrecv: write 0, read 1 , receiving 0x0d Detected Bus Pirate hardware v3.a buspirate_sendrecv: write 0, read 8 , receiving 0x0a 0x46 0x69 0x72 0x6d 0x77 0x61 0x72 buspirate_sendrecv: write 0, read 1 , receiving 0x65 buspirate_sendrecv: write 0, read 1 , receiving 0x20 buspirate_sendrecv: write 0, read 1 , receiving 0x76 buspirate_sendrecv: write 0, read 1 , receiving 0x36 buspirate_sendrecv: write 0, read 1 , receiving 0x2e buspirate_sendrecv: write 0, read 1 , receiving 0x33 buspirate_sendrecv: write 0, read 1 , receiving 0x2d buspirate_sendrecv: write 0, read 1 , receiving 0x62 buspirate_sendrecv: write 0, read 1 , receiving 0x65 buspirate_sendrecv: write 0, read 1 , receiving 0x74 buspirate_sendrecv: write 0, read 1 , receiving 0x61 buspirate_sendrecv: write 0, read 1 , receiving 0x31 buspirate_sendrecv: write 0, read 1 , receiving 0x20 Detected Bus Pirate firmware 6.3 ("v6.3-beta1") buspirate_sendrecv: write 0, read 4 , receiving 0x72 0x32 0x30 0x38 buspirate_sendrecv: write 0, read 1 , receiving 0x38 buspirate_sendrecv: write 0, read 1 , receiving 0x20 buspirate_sendrecv: write 0, read 1 , receiving 0x20 buspirate_sendrecv: write 0, read 1 , receiving 0x42 buspirate_sendrecv: write 0, read 1 , receiving 0x6f buspirate_sendrecv: write 0, read 1 , receiving 0x6f buspirate_sendrecv: write 0, read 1 , receiving 0x74 buspirate_sendrecv: write 0, read 1 , receiving 0x6c buspirate_sendrecv: write 0, read 1 , receiving 0x6f buspirate_sendrecv: write 0, read 1 , receiving 0x61 buspirate_sendrecv: write 0, read 1 , receiving 0x64 buspirate_sendrecv: write 0, read 1 , receiving 0x65 buspirate_sendrecv: write 0, read 1 , receiving 0x72 buspirate_sendrecv: write 0, read 1 , receiving 0x20 buspirate_sendrecv: write 0, read 1 , receiving 0x76 buspirate_sendrecv: write 0, read 1 , receiving 0x34 buspirate_sendrecv: write 0, read 1 , receiving 0x2e buspirate_sendrecv: write 0, read 1 , receiving 0x34 buspirate_sendrecv: write 0, read 1 , receiving 0x0d buspirate_sendrecv: write 0, read 1 , receiving 0x0a buspirate_sendrecv: write 0, read 1 , receiving 0x44 buspirate_sendrecv: write 0, read 1 , receiving 0x45 buspirate_sendrecv: write 0, read 1 , receiving 0x56 buspirate_sendrecv: write 0, read 1 , receiving 0x49 buspirate_sendrecv: write 0, read 1 , receiving 0x44 buspirate_sendrecv: write 0, read 1 , receiving 0x3a buspirate_sendrecv: write 0, read 1 , receiving 0x30 buspirate_sendrecv: write 0, read 1 , receiving 0x78 buspirate_sendrecv: write 0, read 1 , receiving 0x30 buspirate_sendrecv: write 0, read 1 , receiving 0x34 buspirate_sendrecv: write 0, read 1 , receiving 0x34 buspirate_sendrecv: write 0, read 1 , receiving 0x37 buspirate_sendrecv: write 0, read 1 , receiving 0x20 buspirate_sendrecv: write 0, read 1 , receiving 0x52 buspirate_sendrecv: write 0, read 1 , receiving 0x45 buspirate_sendrecv: write 0, read 1 , receiving 0x56 buspirate_sendrecv: write 0, read 1 , receiving 0x49 buspirate_sendrecv: write 0, read 1 , receiving 0x44 buspirate_sendrecv: write 0, read 1 , receiving 0x3a buspirate_sendrecv: write 0, read 1 , receiving 0x30 buspirate_sendrecv: write 0, read 1 , receiving 0x78 buspirate_sendrecv: write 0, read 1 , receiving 0x33 buspirate_sendrecv: write 0, read 1 , receiving 0x30 buspirate_sendrecv: write 0, read 1 , receiving 0x34 buspirate_sendrecv: write 0, read 1 , receiving 0x36 buspirate_sendrecv: write 0, read 1 , receiving 0x20 buspirate_sendrecv: write 0, read 1 , receiving 0x28 buspirate_sendrecv: write 0, read 1 , receiving 0x32 buspirate_sendrecv: write 0, read 1 , receiving 0x34 buspirate_sendrecv: write 0, read 1 , receiving 0x46 buspirate_sendrecv: write 0, read 1 , receiving 0x4a buspirate_sendrecv: write 0, read 1 , receiving 0x36 buspirate_sendrecv: write 0, read 1 , receiving 0x34 buspirate_sendrecv: write 0, read 1 , receiving 0x47 buspirate_sendrecv: write 0, read 1 , receiving 0x41 buspirate_sendrecv: write 0, read 1 , receiving 0x30 buspirate_sendrecv: write 0, read 1 , receiving 0x30 buspirate_sendrecv: write 0, read 1 , receiving 0x32 buspirate_sendrecv: write 0, read 1 , receiving 0x20 buspirate_sendrecv: write 0, read 1 , receiving 0x42 buspirate_sendrecv: write 0, read 1 , receiving 0x38 buspirate_sendrecv: write 0, read 1 , receiving 0x29 buspirate_sendrecv: write 0, read 1 , receiving 0x0d buspirate_sendrecv: write 0, read 1 , receiving 0x0a buspirate_sendrecv: write 0, read 1 , receiving 0x68 buspirate_sendrecv: write 0, read 1 , receiving 0x74 buspirate_sendrecv: write 0, read 1 , receiving 0x74 buspirate_sendrecv: write 0, read 1 , receiving 0x70 buspirate_sendrecv: write 0, read 1 , receiving 0x3a buspirate_sendrecv: write 0, read 1 , receiving 0x2f buspirate_sendrecv: write 0, read 1 , receiving 0x2f buspirate_sendrecv: write 0, read 1 , receiving 0x64 buspirate_sendrecv: write 0, read 1 , receiving 0x61 buspirate_sendrecv: write 0, read 1 , receiving 0x6e buspirate_sendrecv: write 0, read 1 , receiving 0x67 buspirate_sendrecv: write 0, read 1 , receiving 0x65 buspirate_sendrecv: write 0, read 1 , receiving 0x72 buspirate_sendrecv: write 0, read 1 , receiving 0x6f buspirate_sendrecv: write 0, read 1 , receiving 0x75 buspirate_sendrecv: write 0, read 1 , receiving 0x73 buspirate_sendrecv: write 0, read 1 , receiving 0x70 buspirate_sendrecv: write 0, read 1 , receiving 0x72 buspirate_sendrecv: write 0, read 1 , receiving 0x6f buspirate_sendrecv: write 0, read 1 , receiving 0x74 buspirate_sendrecv: write 0, read 1 , receiving 0x6f buspirate_sendrecv: write 0, read 1 , receiving 0x74 buspirate_sendrecv: write 0, read 1 , receiving 0x79 buspirate_sendrecv: write 0, read 1 , receiving 0x70 buspirate_sendrecv: write 0, read 1 , receiving 0x65 buspirate_sendrecv: write 0, read 1 , receiving 0x73 buspirate_sendrecv: write 0, read 1 , receiving 0x2e buspirate_sendrecv: write 0, read 1 , receiving 0x63 buspirate_sendrecv: write 0, read 1 , receiving 0x6f buspirate_sendrecv: write 0, read 1 , receiving 0x6d buspirate_sendrecv: write 0, read 1 , receiving 0x0d buspirate_sendrecv: write 0, read 1 , receiving 0x0a buspirate_sendrecv: write 0, read 1 , receiving 0x48 buspirate_sendrecv: write 0, read 1 , receiving 0x69 buspirate_sendrecv: write 0, read 1 , receiving 0x5a buspirate_sendrecv: write 0, read 1 , receiving 0x3e Using SPI command set v2. buspirate_sendrecv: write 2, read 0 Sending 0x62 0x0a buspirate_sendrecv: write 0, read 1 , receiving 0x62 buspirate_sendrecv: write 0, read 1 , receiving 0x0d buspirate_sendrecv: write 0, read 1 , receiving 0x0a buspirate_sendrecv: write 0, read 1 , receiving 0x53 buspirate_sendrecv: write 0, read 1 , receiving 0x65 buspirate_sendrecv: write 0, read 1 , receiving 0x74 buspirate_sendrecv: write 0, read 1 , receiving 0x20 buspirate_sendrecv: write 0, read 1 , receiving 0x73 buspirate_sendrecv: write 0, read 1 , receiving 0x65 buspirate_sendrecv: write 0, read 1 , receiving 0x72 buspirate_sendrecv: write 0, read 1 , receiving 0x69 buspirate_sendrecv: write 0, read 1 , receiving 0x61 buspirate_sendrecv: write 0, read 1 , receiving 0x6c buspirate_sendrecv: write 0, read 1 , receiving 0x20 buspirate_sendrecv: write 0, read 1 , receiving 0x70 buspirate_sendrecv: write 0, read 1 , receiving 0x6f buspirate_sendrecv: write 0, read 1 , receiving 0x72 buspirate_sendrecv: write 0, read 1 , receiving 0x74 buspirate_sendrecv: write 0, read 1 , receiving 0x20 buspirate_sendrecv: write 0, read 1 , receiving 0x73 buspirate_sendrecv: write 0, read 1 , receiving 0x70 buspirate_sendrecv: write 0, read 1 , receiving 0x65 buspirate_sendrecv: write 0, read 1 , receiving 0x65 buspirate_sendrecv: write 0, read 1 , receiving 0x64 buspirate_sendrecv: write 0, read 1 , receiving 0x3a buspirate_sendrecv: write 0, read 1 , receiving 0x20 buspirate_sendrecv: write 0, read 1 , receiving 0x28 buspirate_sendrecv: write 0, read 1 , receiving 0x62 buspirate_sendrecv: write 0, read 1 , receiving 0x70 buspirate_sendrecv: write 0, read 1 , receiving 0x73 buspirate_sendrecv: write 0, read 1 , receiving 0x29 buspirate_sendrecv: write 0, read 1 , receiving 0x0d buspirate_sendrecv: write 0, read 1 , receiving 0x0a buspirate_sendrecv: write 0, read 1 , receiving 0x20 buspirate_sendrecv: write 0, read 1 , receiving 0x31 buspirate_sendrecv: write 0, read 1 , receiving 0x2e buspirate_sendrecv: write 0, read 1 , receiving 0x20 buspirate_sendrecv: write 0, read 1 , receiving 0x33 buspirate_sendrecv: write 0, read 1 , receiving 0x30 buspirate_sendrecv: write 0, read 1 , receiving 0x30 buspirate_sendrecv: write 0, read 1 , receiving 0x0d buspirate_sendrecv: write 0, read 1 , receiving 0x0a buspirate_sendrecv: write 0, read 1 , receiving 0x20 buspirate_sendrecv: write 0, read 1 , receiving 0x32 buspirate_sendrecv: write 0, read 1 , receiving 0x2e buspirate_sendrecv: write 0, read 1 , receiving 0x20 buspirate_sendrecv: write 0, read 1 , receiving 0x31 buspirate_sendrecv: write 0, read 1 , receiving 0x32 buspirate_sendrecv: write 0, read 1 , receiving 0x30 buspirate_sendrecv: write 0, read 1 , receiving 0x30 buspirate_sendrecv: write 0, read 1 , receiving 0x0d buspirate_sendrecv: write 0, read 1 , receiving 0x0a buspirate_sendrecv: write 0, read 1 , receiving 0x20 buspirate_sendrecv: write 0, read 1 , receiving 0x33 buspirate_sendrecv: write 0, read 1 , receiving 0x2e buspirate_sendrecv: write 0, read 1 , receiving 0x20 buspirate_sendrecv: write 0, read 1 , receiving 0x32 buspirate_sendrecv: write 0, read 1 , receiving 0x34 buspirate_sendrecv: write 0, read 1 , receiving 0x30 buspirate_sendrecv: write 0, read 1 , receiving 0x30 buspirate_sendrecv: write 0, read 1 , receiving 0x0d buspirate_sendrecv: write 0, read 1 , receiving 0x0a buspirate_sendrecv: write 0, read 1 , receiving 0x20 buspirate_sendrecv: write 0, read 1 , receiving 0x34 buspirate_sendrecv: write 0, read 1 , receiving 0x2e buspirate_sendrecv: write 0, read 1 , receiving 0x20 buspirate_sendrecv: write 0, read 1 , receiving 0x34 buspirate_sendrecv: write 0, read 1 , receiving 0x38 buspirate_sendrecv: write 0, read 1 , receiving 0x30 buspirate_sendrecv: write 0, read 1 , receiving 0x30 buspirate_sendrecv: write 0, read 1 , receiving 0x0d buspirate_sendrecv: write 0, read 1 , receiving 0x0a buspirate_sendrecv: write 0, read 1 , receiving 0x20 buspirate_sendrecv: write 0, read 1 , receiving 0x35 buspirate_sendrecv: write 0, read 1 , receiving 0x2e buspirate_sendrecv: write 0, read 1 , receiving 0x20 buspirate_sendrecv: write 0, read 1 , receiving 0x39 buspirate_sendrecv: write 0, read 1 , receiving 0x36 buspirate_sendrecv: write 0, read 1 , receiving 0x30 buspirate_sendrecv: write 0, read 1 , receiving 0x30 buspirate_sendrecv: write 0, read 1 , receiving 0x0d buspirate_sendrecv: write 0, read 1 , receiving 0x0a buspirate_sendrecv: write 0, read 1 , receiving 0x20 buspirate_sendrecv: write 0, read 1 , receiving 0x36 buspirate_sendrecv: write 0, read 1 , receiving 0x2e buspirate_sendrecv: write 0, read 1 , receiving 0x20 buspirate_sendrecv: write 0, read 1 , receiving 0x31 buspirate_sendrecv: write 0, read 1 , receiving 0x39 buspirate_sendrecv: write 0, read 1 , receiving 0x32 buspirate_sendrecv: write 0, read 1 , receiving 0x30 buspirate_sendrecv: write 0, read 1 , receiving 0x30 buspirate_sendrecv: write 0, read 1 , receiving 0x0d buspirate_sendrecv: write 0, read 1 , receiving 0x0a buspirate_sendrecv: write 0, read 1 , receiving 0x20 buspirate_sendrecv: write 0, read 1 , receiving 0x37 buspirate_sendrecv: write 0, read 1 , receiving 0x2e buspirate_sendrecv: write 0, read 1 , receiving 0x20 buspirate_sendrecv: write 0, read 1 , receiving 0x33 buspirate_sendrecv: write 0, read 1 , receiving 0x38 buspirate_sendrecv: write 0, read 1 , receiving 0x34 buspirate_sendrecv: write 0, read 1 , receiving 0x30 buspirate_sendrecv: write 0, read 1 , receiving 0x30 buspirate_sendrecv: write 0, read 1 , receiving 0x0d buspirate_sendrecv: write 0, read 1 , receiving 0x0a buspirate_sendrecv: write 0, read 1 , receiving 0x20 buspirate_sendrecv: write 0, read 1 , receiving 0x38 buspirate_sendrecv: write 0, read 1 , receiving 0x2e buspirate_sendrecv: write 0, read 1 , receiving 0x20 buspirate_sendrecv: write 0, read 1 , receiving 0x35 buspirate_sendrecv: write 0, read 1 , receiving 0x37 buspirate_sendrecv: write 0, read 1 , receiving 0x36 buspirate_sendrecv: write 0, read 1 , receiving 0x30 buspirate_sendrecv: write 0, read 1 , receiving 0x30 buspirate_sendrecv: write 0, read 1 , receiving 0x0d buspirate_sendrecv: write 0, read 1 , receiving 0x0a buspirate_sendrecv: write 0, read 1 , receiving 0x20 buspirate_sendrecv: write 0, read 1 , receiving 0x39 buspirate_sendrecv: write 0, read 1 , receiving 0x2e buspirate_sendrecv: write 0, read 1 , receiving 0x20 buspirate_sendrecv: write 0, read 1 , receiving 0x31 buspirate_sendrecv: write 0, read 1 , receiving 0x31 buspirate_sendrecv: write 0, read 1 , receiving 0x35 buspirate_sendrecv: write 0, read 1 , receiving 0x32 buspirate_sendrecv: write 0, read 1 , receiving 0x30 buspirate_sendrecv: write 0, read 1 , receiving 0x30 buspirate_sendrecv: write 0, read 1 , receiving 0x0d buspirate_sendrecv: write 0, read 1 , receiving 0x0a buspirate_sendrecv: write 0, read 1 , receiving 0x31 buspirate_sendrecv: write 0, read 1 , receiving 0x30 buspirate_sendrecv: write 0, read 1 , receiving 0x2e buspirate_sendrecv: write 0, read 1 , receiving 0x20 buspirate_sendrecv: write 0, read 1 , receiving 0x42 buspirate_sendrecv: write 0, read 1 , receiving 0x52 buspirate_sendrecv: write 0, read 1 , receiving 0x47 buspirate_sendrecv: write 0, read 1 , receiving 0x20 buspirate_sendrecv: write 0, read 1 , receiving 0x72 buspirate_sendrecv: write 0, read 1 , receiving 0x61 buspirate_sendrecv: write 0, read 1 , receiving 0x77 buspirate_sendrecv: write 0, read 1 , receiving 0x20 buspirate_sendrecv: write 0, read 1 , receiving 0x76 buspirate_sendrecv: write 0, read 1 , receiving 0x61 buspirate_sendrecv: write 0, read 1 , receiving 0x6c buspirate_sendrecv: write 0, read 1 , receiving 0x75 buspirate_sendrecv: write 0, read 1 , receiving 0x65 buspirate_sendrecv: write 0, read 1 , receiving 0x0d buspirate_sendrecv: write 0, read 1 , receiving 0x0a buspirate_sendrecv: write 0, read 1 , receiving 0x0d buspirate_sendrecv: write 0, read 1 , receiving 0x0a buspirate_sendrecv: write 0, read 1 , receiving 0x28 buspirate_sendrecv: write 0, read 1 , receiving 0x39 buspirate_sendrecv: write 0, read 1 , receiving 0x29 buspirate_sendrecv: write 0, read 1 , receiving 0x3e buspirate_sendrecv: write 3, read 0 Sending 0x31 0x30 0x0a buspirate_sendrecv: write 0, read 1 , receiving 0x31 buspirate_sendrecv: write 0, read 1 , receiving 0x30 buspirate_sendrecv: write 0, read 1 , receiving 0x0d buspirate_sendrecv: write 0, read 1 , receiving 0x0a buspirate_sendrecv: write 0, read 1 , receiving 0x45 buspirate_sendrecv: write 0, read 1 , receiving 0x6e buspirate_sendrecv: write 0, read 1 , receiving 0x74 buspirate_sendrecv: write 0, read 1 , receiving 0x65 buspirate_sendrecv: write 0, read 1 , receiving 0x72 buspirate_sendrecv: write 0, read 1 , receiving 0x20 buspirate_sendrecv: write 0, read 1 , receiving 0x72 buspirate_sendrecv: write 0, read 1 , receiving 0x61 buspirate_sendrecv: write 0, read 1 , receiving 0x77 buspirate_sendrecv: write 0, read 1 , receiving 0x20 buspirate_sendrecv: write 0, read 1 , receiving 0x76 buspirate_sendrecv: write 0, read 1 , receiving 0x61 buspirate_sendrecv: write 0, read 1 , receiving 0x6c buspirate_sendrecv: write 0, read 1 , receiving 0x75 buspirate_sendrecv: write 0, read 1 , receiving 0x65 buspirate_sendrecv: write 0, read 1 , receiving 0x20 buspirate_sendrecv: write 0, read 1 , receiving 0x66 buspirate_sendrecv: write 0, read 1 , receiving 0x6f buspirate_sendrecv: write 0, read 1 , receiving 0x72 buspirate_sendrecv: write 0, read 1 , receiving 0x20 buspirate_sendrecv: write 0, read 1 , receiving 0x42 buspirate_sendrecv: write 0, read 1 , receiving 0x52 buspirate_sendrecv: write 0, read 1 , receiving 0x47 buspirate_sendrecv: write 0, read 1 , receiving 0x0d buspirate_sendrecv: write 0, read 1 , receiving 0x0a buspirate_sendrecv: write 0, read 1 , receiving 0x0d buspirate_sendrecv: write 0, read 1 , receiving 0x0a buspirate_sendrecv: write 0, read 1 , receiving 0x28 buspirate_sendrecv: write 0, read 1 , receiving 0x33 buspirate_sendrecv: write 0, read 1 , receiving 0x34 buspirate_sendrecv: write 0, read 1 , receiving 0x29 buspirate_sendrecv: write 0, read 1 , receiving 0x3e buspirate_sendrecv: write 2, read 0 Sending 0x31 0x0a Baud rate is 115200 now. buspirate_sendrecv: write 1, read 0 Sending 0x20 buspirate_sendrecv: write 0, read 4 , receiving 0x31 0x0d 0x0a 0x41 buspirate_sendrecv: write 0, read 1 , receiving 0x64 buspirate_sendrecv: write 0, read 1 , receiving 0x6a buspirate_sendrecv: write 0, read 1 , receiving 0x75 buspirate_sendrecv: write 0, read 1 , receiving 0x73 buspirate_sendrecv: write 0, read 1 , receiving 0x74 buspirate_sendrecv: write 0, read 1 , receiving 0x20 buspirate_sendrecv: write 0, read 1 , receiving 0x79 buspirate_sendrecv: write 0, read 1 , receiving 0x6f buspirate_sendrecv: write 0, read 1 , receiving 0x75 buspirate_sendrecv: write 0, read 1 , receiving 0x72 buspirate_sendrecv: write 0, read 1 , receiving 0x20 buspirate_sendrecv: write 0, read 1 , receiving 0x74 buspirate_sendrecv: write 0, read 1 , receiving 0x65 buspirate_sendrecv: write 0, read 1 , receiving 0x72 buspirate_sendrecv: write 0, read 1 , receiving 0x6d buspirate_sendrecv: write 0, read 1 , receiving 0x69 buspirate_sendrecv: write 0, read 1 , receiving 0x6e buspirate_sendrecv: write 0, read 1 , receiving 0x61 buspirate_sendrecv: write 0, read 1 , receiving 0x6c buspirate_sendrecv: write 0, read 1 , receiving 0x0d buspirate_sendrecv: write 0, read 1 , receiving 0x0a buspirate_sendrecv: write 0, read 1 , receiving 0x53 buspirate_sendrecv: write 0, read 1 , receiving 0x70 buspirate_sendrecv: write 0, read 1 , receiving 0x61 buspirate_sendrecv: write 0, read 1 , receiving 0x63 buspirate_sendrecv: write 0, read 1 , receiving 0x65 buspirate_sendrecv: write 0, read 1 , receiving 0x20 buspirate_sendrecv: write 0, read 1 , receiving 0x74 buspirate_sendrecv: write 0, read 1 , receiving 0x6f buspirate_sendrecv: write 0, read 1 , receiving 0x20 buspirate_sendrecv: write 0, read 1 , receiving 0x63 buspirate_sendrecv: write 0, read 1 , receiving 0x6f buspirate_sendrecv: write 0, read 1 , receiving 0x6e buspirate_sendrecv: write 0, read 1 , receiving 0x74 buspirate_sendrecv: write 0, read 1 , receiving 0x69 buspirate_sendrecv: write 0, read 1
Signed-off-by: Carl-Daniel Hailfinger c-d.hailfinger.devel.2006@gmx.net Signed-off-by: Stefan Tauner stefan.tauner@student.tuwien.ac.at
buspirate_spi.c | 44 +++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 43 insertions(+), 1 deletion(-)
diff --git a/buspirate_spi.c b/buspirate_spi.c index d2ebc75..57da63a 100644 --- a/buspirate_spi.c +++ b/buspirate_spi.c @@ -178,7 +178,10 @@ static int buspirate_spi_shutdown(void *data) } /* Reset Bus Pirate (return to user terminal) */ bp_commbuf[0] = 0x0f;
ret = buspirate_sendrecv(bp_commbuf, 1, 0);
if ((ret = buspirate_sendrecv(bp_commbuf, 1, 0)))goto out_shutdown;if ((ret = serialport_config(sp_fd, 115200)))goto out_shutdown;out_shutdown: /* Shut down serial port communication */ @@ -365,6 +368,45 @@ int buspirate_spi_init(void) spi_programmer_buspirate.command = buspirate_spi_send_command_v1; }
/* Increase PIC/FT232 UART speed to 2 Mbaud (instead of 115200 baud) in firmware 5.5 and newer.
Where is the firmware able to increase UART speed when/while 115200 is the highest speed documented? See https://code.google.com/p/dangerous-prototypes-open-hardware/source/browse/t...
* Although this is already possible in firmware 5.2, fast UART in combination with the old SPI* command set causes hangs for bigger transactions. This is caused by a UART buffer overrun* in the PIC, and all firmware versions up to (hopefully not including) 6.2 are affected.*/if (BP_FWVERSION(fw_version_major, fw_version_minor) >= BP_FWVERSION(5, 5)) {// FIXME: Do this only for USB-based Bus Pirates... unless you're sure the UART can handle more.int cmdlen;/* Request setting the UART baud rate. */cmdlen = snprintf((char *)bp_commbuf, DEFAULT_BUFSIZE, "b\n");if ((ret = buspirate_sendrecv(bp_commbuf, cmdlen, 0)))return ret;if ((ret = buspirate_wait_for_string(bp_commbuf, ">")))return ret;/* Request setting the UART clock divisor manually. */cmdlen = snprintf((char *)bp_commbuf, DEFAULT_BUFSIZE, "10\n");if ((ret = buspirate_sendrecv(bp_commbuf, cmdlen, 0)))return ret;if ((ret = buspirate_wait_for_string(bp_commbuf, ">")))return ret;/* Set the UART clock divisor. New clock is 4000000/(divisor+1). */cmdlen = snprintf((char *)bp_commbuf, DEFAULT_BUFSIZE, "%i\n", 1);if ((ret = buspirate_sendrecv(bp_commbuf, cmdlen, 0)))return ret;sleep(1);if (serialport_config(sp_fd, 115200) != 0)return 1;bp_commbuf[0] = ' ';if ((ret = buspirate_sendrecv(bp_commbuf, 1, 0)))return ret;if ((ret = buspirate_wait_for_string(bp_commbuf, "HiZ>")))return ret;msg_pdbg("Using fast 2 Mbaud for Bus Pirate <-> host communication.\n");} else {msg_pinfo("Bus Pirate firmware 5.4 and older does not support fast Bus Pirate <-> host ""communication. Limiting UART speed to 115200 Baud.\n");msg_pinfo("It is recommended to upgrade to firmware 6.2 or newer.\n");}/* Workaround for broken speed settings in firmware 6.1 and older. */ if (BP_FWVERSION(fw_version_major, fw_version_minor) < BP_FWVERSION(6, 2)) if (spispeed > 0x4) {-- Kind regards, Stefan Tauner
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Idwer Vollering