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| author | Tomek CEDRO <cederom@tlen.pl> | 2011-06-25 06:09:17 +0200 |
|---|---|---|
| committer | Tomek CEDRO <cederom@tlen.pl> | 2011-06-25 06:09:17 +0200 |
| commit | c225664e61681b78eda4f450adceee140d5ffec0 (patch) | |
| tree | 5b654cdc91a65f0594b2f2c62a0fe1341723ea8c | |
| parent | 1cfa4bfd3bbd1f92d68b5e3d9bb8e149952dd3d4 (diff) | |
| download | openocd_libswd-c225664e61681b78eda4f450adceee140d5ffec0.tar.gz openocd_libswd-c225664e61681b78eda4f450adceee140d5ffec0.tar.bz2 openocd_libswd-c225664e61681b78eda4f450adceee140d5ffec0.tar.xz openocd_libswd-c225664e61681b78eda4f450adceee140d5ffec0.zip | |
FT2232/BITBANG: Added layout specific bitbang_deny paramater that will block bitbaning selected signals that could damage interface hardware.
| -rw-r--r-- | src/jtag/drivers/ft2232.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/src/jtag/drivers/ft2232.c b/src/jtag/drivers/ft2232.c index 7db7bdd2..c040b740 100644 --- a/src/jtag/drivers/ft2232.c +++ b/src/jtag/drivers/ft2232.c @@ -166,12 +166,20 @@ static unsigned ft2232_max_tck = FTDI_2232C_MAX_TCK; static uint16_t ft2232_vid[MAX_USB_IDS + 1] = { 0x0403, 0 }; static uint16_t ft2232_pid[MAX_USB_IDS + 1] = { 0x6010, 0 }; +/** This structure describes different layout of FT2232 based devices. */ struct ft2232_layout { + /// Layout name char* name; + /// Lyout specific initialization routine int (*init)(void); + /// Layout specific reset routine void (*reset)(int trst, int srst); + /// Layout specific LED blink routine void (*blink)(void); + /// Which FTDI channel does this layout use int channel; + /// This will forbid bitbanging selected port pins + int bitbang_deny; }; /* init procedures for supported layouts */ @@ -645,6 +653,12 @@ int ft2232_bitbang(void *device, char *signal_name, int GETnSET, int *value){ // Pin mask is also related with port direction and complicates it!!! sigmask=sig->mask; + // First check against restricted port pins defined by the interface layout + if (sigmask & layout->bitbang_deny){ + LOG_ERROR("This interface does not allow to bit-bang selected pins (0x%08X)!", layout->bitbang_deny); + return ERROR_FAIL; + } + if (!GETnSET){ // We will SET port pins selected by sigmask. // Modify our pins value, but remember about other pins and their previous value |