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Diffstat (limited to 'src/lib/timers.h')
| -rw-r--r-- | src/lib/timers.h | 145 |
1 files changed, 0 insertions, 145 deletions
diff --git a/src/lib/timers.h b/src/lib/timers.h deleted file mode 100644 index 18b0afb..0000000 --- a/src/lib/timers.h +++ /dev/null @@ -1,145 +0,0 @@ -/* ***************************************************************************** - * 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/>. - * - * Created: 12/18/09 02:38:10 - * Copyright (c) 2009 Perry L. Hung. All rights reserved. - * - * ****************************************************************************/ - -/** - * @file timers.h - * - * @brief Timer prototypes and various definitions - */ - -/* Note to self: - * The timer clock frequencies are automatically fixed by hardware. - * There are two cases: - * 1. if the APB prescaler is 1, the timer clock frequencies are - * set to the same frequency as that of the APB domain to which - * the timers are connected. - * 2. otherwise, they are set to twice (x2) the frequency of the - * APB domain to which the timers are connected. - * See stm32 manual, 77/995 - * - * hence, 72 mhz timers - * */ - -/* Maple Timer channels: - * Timer Maple Pin STM32 Pin Type - * TIM1_CH1 D6 PA8 Advanced - * TIM1_CH2 D7 PA9 Advanced - * TIM1_CH3 D8 PA10 Advanced - * - * TIM2_CH1 D2 PA0 - * TIM2_CH2 D3 PA1 - * TIM2_CH3 D1 PA2 - * TIM2_CH4 D0 PA3 - * - * TIM3_CH1 D12 PA6 - * TIM3_CH2 D11 PA7 - * TIM3_CH3 EXT7 PB0 - * TIM3_CH4 EXT8 PB1 - * - * TIM4_CH1 EXT5 PB6 - * TIM4_CH1 EXT9 PB7 - * TIM4_CH1 EXT15 PB8 - * TIM4_CH1 EXT4 PB9 - * - * Not supported: - * TIM1_CH4 USBDM, not available PA11 Advanced - * TIM1_CH1_N EXT12 PB13 - * TIM1_CH2_N EXT13 PB14 - * TIM1_CH3_N EXT14 PB15 - * */ - -/* I don't like the Arduino API for dealing with pin modes. - * How about... - * - * pinMode(digitalPin, PWM); - * pwmWrite(digitalPin) */ - - -#ifndef _TIMERS_H_ -#define _TIMERS_H_ -#include <inttypes.h> - -#ifdef __cplusplus -extern "C"{ -#endif - -typedef volatile uint32_t* TimerCCR; - -#define TIMER1_BASE 0x40012C00 -#define TIMER2_BASE 0x40000000 -#define TIMER3_BASE 0x40000400 -#define TIMER4_BASE 0x40000800 - -#define ARPE BIT(7) // Auto-reload preload enable -#define NOT_A_TIMER 0 - -#define TIMER1_CH1_CCR (TimerCCR)(TIMER1_BASE + 0x34) -#define TIMER1_CH2_CCR (TimerCCR)(TIMER1_BASE + 0x38) -#define TIMER1_CH3_CCR (TimerCCR)(TIMER1_BASE + 0x3C) -#define TIMER1_CH4_CCR (TimerCCR)(TIMER1_BASE + 0x40) - -#define TIMER2_CH1_CCR (TimerCCR)(TIMER2_BASE + 0x34) -#define TIMER2_CH2_CCR (TimerCCR)(TIMER2_BASE + 0x38) -#define TIMER2_CH3_CCR (TimerCCR)(TIMER2_BASE + 0x3C) -#define TIMER2_CH4_CCR (TimerCCR)(TIMER2_BASE + 0x40) - -#define TIMER3_CH1_CCR (TimerCCR)(TIMER3_BASE + 0x34) -#define TIMER3_CH2_CCR (TimerCCR)(TIMER3_BASE + 0x38) -#define TIMER3_CH3_CCR (TimerCCR)(TIMER3_BASE + 0x3C) -#define TIMER3_CH4_CCR (TimerCCR)(TIMER3_BASE + 0x40) - -#define TIMER4_CH1_CCR (TimerCCR)(TIMER4_BASE + 0x34) -#define TIMER4_CH2_CCR (TimerCCR)(TIMER4_BASE + 0x38) -#define TIMER4_CH3_CCR (TimerCCR)(TIMER4_BASE + 0x3C) -#define TIMER4_CH4_CCR (TimerCCR)(TIMER4_BASE + 0x40) - - -/* Turn on timer with prescale as the divisor - * void timer_init(uint32_t timer, uint16_t prescale) - * timer -> {1-4} - * prescale -> {1-65535} - * */ -void timer_init(uint8_t, uint16_t); -void timers_disable(void); -void timers_disable_channel(uint8, uint8); - -/* Turn on PWM with duty_cycle on the specified channel in timer. - * This function takes in a pointer to the corresponding CCR - * register for the pin cause it saves pwmWrite() a couple of - * cycles. - * - * void timer_pwm(uint8_t channel, uint8_t duty_cycle); - * channel -> {TIMERx_CHn_CCR} - * duty_cycle -> {0-65535} - * - * PRECONDITIONS: - * pin has been set to alternate function output - * timer has been initialized - */ -static inline void timer_pwm_write_ccr(TimerCCR CCR, uint16_t duty_cycle) { - *CCR = duty_cycle; -} - -#ifdef __cplusplus -} // extern "C" -#endif - - -#endif - |