diff options
Diffstat (limited to 'ft2232_spi.c')
-rw-r--r-- | ft2232_spi.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/ft2232_spi.c b/ft2232_spi.c index df156d6f..110bdece 100644 --- a/ft2232_spi.c +++ b/ft2232_spi.c @@ -419,6 +419,9 @@ static int ft2232_spi_init(void) } free(arg); + /* Remember reserved pins before pindir gets modified. */ + const uint8_t rsv_bits = pindir & 0xf0; + arg = extract_programmer_param("port"); if (arg) { switch (toupper((unsigned char)*arg)) { @@ -478,6 +481,15 @@ static int ft2232_spi_init(void) return -2; } unsigned int pin = temp + 4; + + if (rsv_bits & 1 << pin) { + msg_perr("Error: Invalid GPIOL specified: \"%s\".\n" + "The pin is reserved on this programmer.\n", + arg); + free(arg); + return -2; + } + cs_bits |= 1 << pin; pindir |= 1 << pin; } |