diff options
Diffstat (limited to 'platforms/arm_atsam/gpio.h')
| -rw-r--r-- | platforms/arm_atsam/gpio.h | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/platforms/arm_atsam/gpio.h b/platforms/arm_atsam/gpio.h new file mode 100644 index 0000000000..915ed0ef4f --- /dev/null +++ b/platforms/arm_atsam/gpio.h @@ -0,0 +1,77 @@ +/* Copyright 2021 QMK + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ +#pragma once + +#include "stdint.h" +#include "samd51j18a.h" + +#include "pin_defs.h" + +typedef uint8_t pin_t; + +#define SAMD_PORT(pin) ((pin & 0x20) >> 5) +#define SAMD_PIN(pin) (pin & 0x1f) +#define SAMD_PIN_MASK(pin) (1 << (pin & 0x1f)) + +#define setPinInput(pin) \ + do { \ + PORT->Group[SAMD_PORT(pin)].PINCFG[SAMD_PIN(pin)].bit.INEN = 1; \ + PORT->Group[SAMD_PORT(pin)].DIRCLR.reg = SAMD_PIN_MASK(pin); \ + } while (0) + +#define setPinInputHigh(pin) \ + do { \ + PORT->Group[SAMD_PORT(pin)].DIRCLR.reg = SAMD_PIN_MASK(pin); \ + PORT->Group[SAMD_PORT(pin)].OUTSET.reg = SAMD_PIN_MASK(pin); \ + PORT->Group[SAMD_PORT(pin)].PINCFG[SAMD_PIN(pin)].bit.INEN = 1; \ + PORT->Group[SAMD_PORT(pin)].PINCFG[SAMD_PIN(pin)].bit.PULLEN = 1; \ + } while (0) + +#define setPinInputLow(pin) \ + do { \ + PORT->Group[SAMD_PORT(pin)].DIRCLR.reg = SAMD_PIN_MASK(pin); \ + PORT->Group[SAMD_PORT(pin)].OUTCLR.reg = SAMD_PIN_MASK(pin); \ + PORT->Group[SAMD_PORT(pin)].PINCFG[SAMD_PIN(pin)].bit.INEN = 1; \ + PORT->Group[SAMD_PORT(pin)].PINCFG[SAMD_PIN(pin)].bit.PULLEN = 1; \ + } while (0) + +#define setPinOutput(pin) \ + do { \ + PORT->Group[SAMD_PORT(pin)].DIRSET.reg = SAMD_PIN_MASK(pin); \ + PORT->Group[SAMD_PORT(pin)].OUTCLR.reg = SAMD_PIN_MASK(pin); \ + } while (0) + +#define writePinHigh(pin) \ + do { \ + PORT->Group[SAMD_PORT(pin)].OUTSET.reg = SAMD_PIN_MASK(pin); \ + } while (0) + +#define writePinLow(pin) \ + do { \ + PORT->Group[SAMD_PORT(pin)].OUTCLR.reg = SAMD_PIN_MASK(pin); \ + } while (0) + +#define writePin(pin, level) \ + do { \ + if (level) \ + PORT->Group[SAMD_PORT(pin)].OUTSET.reg = SAMD_PIN_MASK(pin); \ + else \ + PORT->Group[SAMD_PORT(pin)].OUTCLR.reg = SAMD_PIN_MASK(pin); \ + } while (0) + +#define readPin(pin) ((PORT->Group[SAMD_PORT(pin)].IN.reg & SAMD_PIN_MASK(pin)) != 0) + +#define togglePin(pin) (PORT->Group[SAMD_PORT(pin)].OUTTGL.reg = SAMD_PIN_MASK(pin)) |