diff options
Diffstat (limited to 'tmk_core/common/avr')
| -rw-r--r-- | tmk_core/common/avr/_timer.h | 19 | ||||
| -rw-r--r-- | tmk_core/common/avr/_wait.h | 26 | ||||
| -rw-r--r-- | tmk_core/common/avr/gpio.h | 15 | ||||
| -rw-r--r-- | tmk_core/common/avr/platform.c | 21 |
4 files changed, 78 insertions, 3 deletions
diff --git a/tmk_core/common/avr/_timer.h b/tmk_core/common/avr/_timer.h new file mode 100644 index 0000000000..b81e0f68b7 --- /dev/null +++ b/tmk_core/common/avr/_timer.h @@ -0,0 +1,19 @@ +/* Copyright 2021 Simon Arlott + * + * 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 2 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 + +// The platform is 8-bit, so prefer 16-bit timers to reduce code size +#define FAST_TIMER_T_SIZE 16 diff --git a/tmk_core/common/avr/_wait.h b/tmk_core/common/avr/_wait.h index 56eb316faf..683db6ae57 100644 --- a/tmk_core/common/avr/_wait.h +++ b/tmk_core/common/avr/_wait.h @@ -17,8 +17,28 @@ #include <util/delay.h> -#define wait_ms(ms) _delay_ms(ms) -#define wait_us(us) _delay_us(us) +#define wait_ms(ms) \ + do { \ + if (__builtin_constant_p(ms)) { \ + _delay_ms(ms); \ + } else { \ + for (uint16_t i = ms; i > 0; i--) { \ + _delay_ms(1); \ + } \ + } \ + } while (0) +#define wait_us(us) \ + do { \ + if (__builtin_constant_p(us)) { \ + _delay_us(us); \ + } else { \ + for (uint16_t i = us; i > 0; i--) { \ + _delay_us(1); \ + } \ + } \ + } while (0) +#define wait_cpuclock(n) __builtin_avr_delay_cycles(n) +#define CPU_CLOCK F_CPU /* The AVR series GPIOs have a one clock read delay for changes in the digital input signal. * But here's more margin to make it two clocks. */ @@ -26,4 +46,4 @@ # define GPIO_INPUT_PIN_DELAY 2 #endif -#define waitInputPinDelay() __builtin_avr_delay_cycles(GPIO_INPUT_PIN_DELAY) +#define waitInputPinDelay() wait_cpuclock(GPIO_INPUT_PIN_DELAY) diff --git a/tmk_core/common/avr/gpio.h b/tmk_core/common/avr/gpio.h index 231556c29c..e9be68491d 100644 --- a/tmk_core/common/avr/gpio.h +++ b/tmk_core/common/avr/gpio.h @@ -20,6 +20,8 @@ typedef uint8_t pin_t; +/* Operation of GPIO by pin. */ + #define setPinInput(pin) (DDRx_ADDRESS(pin) &= ~_BV((pin)&0xF), PORTx_ADDRESS(pin) &= ~_BV((pin)&0xF)) #define setPinInputHigh(pin) (DDRx_ADDRESS(pin) &= ~_BV((pin)&0xF), PORTx_ADDRESS(pin) |= _BV((pin)&0xF)) #define setPinInputLow(pin) _Static_assert(0, "AVR processors cannot implement an input as pull low") @@ -32,3 +34,16 @@ typedef uint8_t pin_t; #define readPin(pin) ((bool)(PINx_ADDRESS(pin) & _BV((pin)&0xF))) #define togglePin(pin) (PORTx_ADDRESS(pin) ^= _BV((pin)&0xF)) + +/* Operation of GPIO by port. */ + +typedef uint8_t port_data_t; + +#define readPort(port) PINx_ADDRESS(port) + +#define setPortBitInput(port, bit) (DDRx_ADDRESS(port) &= ~_BV((bit)&0xF), PORTx_ADDRESS(port) &= ~_BV((bit)&0xF)) +#define setPortBitInputHigh(port, bit) (DDRx_ADDRESS(port) &= ~_BV((bit)&0xF), PORTx_ADDRESS(port) |= _BV((bit)&0xF)) +#define setPortBitOutput(port, bit) (DDRx_ADDRESS(port) |= _BV((bit)&0xF)) + +#define writePortBitLow(port, bit) (PORTx_ADDRESS(port) &= ~_BV((bit)&0xF)) +#define writePortBitHigh(port, bit) (PORTx_ADDRESS(port) |= _BV((bit)&0xF)) diff --git a/tmk_core/common/avr/platform.c b/tmk_core/common/avr/platform.c new file mode 100644 index 0000000000..3e35b4fe4c --- /dev/null +++ b/tmk_core/common/avr/platform.c @@ -0,0 +1,21 @@ +/* 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/>. + */ + +#include "platform_deps.h" + +void platform_setup(void) { + // do nothing +} |