diff options
-rw-r--r-- | iceprog/iceprog.c | 68 |
1 files changed, 66 insertions, 2 deletions
diff --git a/iceprog/iceprog.c b/iceprog/iceprog.c index 7029f00..a004e28 100644 --- a/iceprog/iceprog.c +++ b/iceprog/iceprog.c @@ -391,15 +391,79 @@ static void flash_power_down() flash_chip_select(false); } +static uint8_t flash_read_status() +{ + uint8_t data[2] = { FC_RSR1 }; + + flash_chip_select(true); + xfer_spi(data, 2); + flash_chip_select(false); + + if(verbose) { + fprintf(stderr, "SR1: 0x%02X\n", data[1]); + fprintf(stderr, " - SPRL: %s\n", + ((data[1] & (1 << 7)) == 0) ? + "unlocked" : + "locked"); + fprintf(stderr, " - SPM: %s\n", + ((data[1] & (1 << 6)) == 0) ? + "Byte/Page Prog Mode" : + "Sequential Prog Mode"); + fprintf(stderr, " - EPE: %s\n", + ((data[1] & (1 << 5)) == 0) ? + "Erase/Prog success" : + "Erase/Prog error"); + fprintf(stderr, "- SPM: %s\n", + ((data[1] & (1 << 4)) == 0) ? + "~WP asserted" : + "~WP deasserted"); + fprintf(stderr, " - SWP: "); + switch((data[1] >> 2) & 0x3) { + case 0: + fprintf(stderr, "All sectors unprotected\n"); + break; + case 1: + fprintf(stderr, "Some sectors protected\n"); + break; + case 2: + fprintf(stderr, "Reserved (xxxx 10xx)\n"); + break; + case 3: + fprintf(stderr, "All sectors protected\n"); + break; + } + fprintf(stderr, " - WEL: %s\n", + ((data[1] & (1 << 1)) == 0) ? + "Not write enabled" : + "Write enabled"); + fprintf(stderr, " - ~RDY: %s\n", + ((data[1] & (1 << 0)) == 0) ? + "Ready" : + "Busy"); + } + + usleep(1000); + + return data[1]; +} + static void flash_write_enable() { - if (verbose) - fprintf(stderr, "write enable..\n"); + if (verbose) { + fprintf(stderr, "status before enable:\n"); + flash_read_status(); + } + if (verbose) fprintf(stderr, "write enable..\n"); uint8_t data[1] = { FC_WE }; flash_chip_select(true); xfer_spi(data, 1); flash_chip_select(false); + + if (verbose) { + fprintf(stderr, "status after enable:\n"); + flash_read_status(); + } } static void flash_bulk_erase() |