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| author | Kevin O'Connor <kevin@koconnor.net> | 2019-10-24 22:02:29 -0400 |
|---|---|---|
| committer | Kevin O'Connor <kevin@koconnor.net> | 2019-10-24 22:02:29 -0400 |
| commit | f723a3141e02d038c8f12aca477d3c38c8283f4a (patch) | |
| tree | a05c85c3f5f2d854f471c21f4c8c306ff4042fa2 /src/atsam | |
| parent | 6f5f2a3bc7c5147f848705864b9ecb6332a190a4 (diff) | |
| download | kutter-f723a3141e02d038c8f12aca477d3c38c8283f4a.tar.gz kutter-f723a3141e02d038c8f12aca477d3c38c8283f4a.tar.xz kutter-f723a3141e02d038c8f12aca477d3c38c8283f4a.zip | |
atsam: Allow PB4-PB7,PB10-PB12 to be used as gpio on sam4
A separate "sysio" register must be set in order to use some port B
pins on the sam4 mcu.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Diffstat (limited to 'src/atsam')
| -rw-r--r-- | src/atsam/gpio.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/atsam/gpio.c b/src/atsam/gpio.c index 2af2bfc0..f3ad95ac 100644 --- a/src/atsam/gpio.c +++ b/src/atsam/gpio.c @@ -60,6 +60,9 @@ set_pull_up(Pio *regs, uint32_t bit, int32_t pull_up) regs->PIO_PUDR = bit; regs->PIO_PPDDR = bit; } + // Check if this pin is a "system IO pin" and disable if so + if (regs == PIOB && (bit & 0x1cf0)) + MATRIX->CCFG_SYSIO |= bit; #endif } |