diff options
Diffstat (limited to 'iceprog/iceprog.c')
| -rw-r--r-- | iceprog/iceprog.c | 54 |
1 files changed, 41 insertions, 13 deletions
diff --git a/iceprog/iceprog.c b/iceprog/iceprog.c index 36378e8..f9d1187 100644 --- a/iceprog/iceprog.c +++ b/iceprog/iceprog.c @@ -85,26 +85,54 @@ enum flash_cmd { }; // --------------------------------------------------------- +// Hardware specific CS, CReset, CDone functions +// --------------------------------------------------------- + +static void set_cs_creset(int cs_b, int creset_b) +{ + uint8_t gpio = 0; + uint8_t direction = 0x93; + + if (cs_b) { + // ADBUS4 (GPIOL0) + gpio |= 0x10; + } + + if (creset_b) { + // ADBUS7 (GPIOL3) + gpio |= 0x80; + } + + mpsse_set_gpio(gpio, direction); +} + +static bool get_cdone(void) +{ + // ADBUS6 (GPIOL2) + return (mpsse_readb_low() & 0x40) != 0; +} + +// --------------------------------------------------------- // FLASH function implementations // --------------------------------------------------------- // the FPGA reset is released so also FLASH chip select should be deasserted static void flash_release_reset() { - mpsse_set_gpio(1, 1); + set_cs_creset(1, 1); } // FLASH chip select assert // should only happen while FPGA reset is asserted static void flash_chip_select() { - mpsse_set_gpio(0, 0); + set_cs_creset(0, 0); } // FLASH chip select deassert static void flash_chip_deselect() { - mpsse_set_gpio(1, 0); + set_cs_creset(1, 0); } // SRAM reset is the same as flash_chip_select() @@ -112,14 +140,14 @@ static void flash_chip_deselect() static void sram_reset() { // Asserting chip select and reset lines - mpsse_set_gpio(0, 0); + set_cs_creset(0, 0); } // SRAM chip select assert // When accessing FPGA SRAM the reset should be released static void sram_chip_select() { - mpsse_set_gpio(0, 1); + set_cs_creset(0, 1); } static void flash_read_id() @@ -741,7 +769,7 @@ int main(int argc, char **argv) mpsse_init(ifnum, devstr, slow_clock); - fprintf(stderr, "cdone: %s\n", mpsse_get_cdone() ? "high" : "low"); + fprintf(stderr, "cdone: %s\n", get_cdone() ? "high" : "low"); flash_release_reset(); usleep(100000); @@ -753,7 +781,7 @@ int main(int argc, char **argv) flash_chip_deselect(); usleep(250000); - fprintf(stderr, "cdone: %s\n", mpsse_get_cdone() ? "high" : "low"); + fprintf(stderr, "cdone: %s\n", get_cdone() ? "high" : "low"); flash_reset(); flash_power_up(); @@ -765,7 +793,7 @@ int main(int argc, char **argv) flash_release_reset(); usleep(250000); - fprintf(stderr, "cdone: %s\n", mpsse_get_cdone() ? "high" : "low"); + fprintf(stderr, "cdone: %s\n", get_cdone() ? "high" : "low"); } else if (prog_sram) { @@ -781,7 +809,7 @@ int main(int argc, char **argv) sram_chip_select(); usleep(2000); - fprintf(stderr, "cdone: %s\n", mpsse_get_cdone() ? "high" : "low"); + fprintf(stderr, "cdone: %s\n", get_cdone() ? "high" : "low"); // --------------------------------------------------------- @@ -802,7 +830,7 @@ int main(int argc, char **argv) mpsse_send_dummy_bytes(6); mpsse_send_dummy_bit(); - fprintf(stderr, "cdone: %s\n", mpsse_get_cdone() ? "high" : "low"); + fprintf(stderr, "cdone: %s\n", get_cdone() ? "high" : "low"); } else /* program flash */ { @@ -815,7 +843,7 @@ int main(int argc, char **argv) flash_chip_deselect(); usleep(250000); - fprintf(stderr, "cdone: %s\n", mpsse_get_cdone() ? "high" : "low"); + fprintf(stderr, "cdone: %s\n", get_cdone() ? "high" : "low"); flash_reset(); flash_power_up(); @@ -917,10 +945,10 @@ int main(int argc, char **argv) flash_power_down(); - mpsse_set_gpio(1, 1); + set_cs_creset(1, 1); usleep(250000); - fprintf(stderr, "cdone: %s\n", mpsse_get_cdone() ? "high" : "low"); + fprintf(stderr, "cdone: %s\n", get_cdone() ? "high" : "low"); } if (f != NULL && f != stdin && f != stdout) |