diff options
Diffstat (limited to 'libopencm3/include/libopencm3/sam/pwm.h')
| -rw-r--r-- | libopencm3/include/libopencm3/sam/pwm.h | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/libopencm3/include/libopencm3/sam/pwm.h b/libopencm3/include/libopencm3/sam/pwm.h new file mode 100644 index 0000000..fabb8b1 --- /dev/null +++ b/libopencm3/include/libopencm3/sam/pwm.h @@ -0,0 +1,109 @@ +/* + * This file is part of the libopencm3 project. + * + * Copyright (C) 2013 Gareth McMullin <gareth@blacksphere.co.nz> + * + * This library is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This library 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 Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this library. If not, see <http://www.gnu.org/licenses/>. + */ + +#ifndef SAM3X_PWM_H +#define SAM3X_PWM_H + +#include <libopencm3/cm3/common.h> +#include <libopencm3/sam/memorymap.h> + +/* --- Pulse Width Modulation (PWM) registers ----------------------- */ + +#define PWM_CLK MMIO32(PWM_BASE + 0x0000) +#define PWM_ENA MMIO32(PWM_BASE + 0x0004) +#define PWM_DIS MMIO32(PWM_BASE + 0x0008) +#define PWM_SR MMIO32(PWM_BASE + 0x000C) +#define PWM_IER1 MMIO32(PWM_BASE + 0x0010) +#define PWM_IDR1 MMIO32(PWM_BASE + 0x0014) +#define PWM_IMR1 MMIO32(PWM_BASE + 0x0018) +#define PWM_ISR1 MMIO32(PWM_BASE + 0x001C) +#define PWM_SCM MMIO32(PWM_BASE + 0x0020) +/* 0x0024 - Reserved */ +#define PWM_SCUC MMIO32(PWM_BASE + 0x0028) +#define PWM_SCUP MMIO32(PWM_BASE + 0x002C) +#define PWM_SCUPUPD MMIO32(PWM_BASE + 0x0030) +#define PWM_IER2 MMIO32(PWM_BASE + 0x0034) +#define PWM_IDR2 MMIO32(PWM_BASE + 0x0038) +#define PWM_IMR2 MMIO32(PWM_BASE + 0x003C) +#define PWM_ISR2 MMIO32(PWM_BASE + 0x0040) +#define PWM_OOV MMIO32(PWM_BASE + 0x0044) +#define PWM_OS MMIO32(PWM_BASE + 0x0048) +#define PWM_OSS MMIO32(PWM_BASE + 0x004C) +#define PWM_OSC MMIO32(PWM_BASE + 0x0050) +#define PWM_OSSUPD MMIO32(PWM_BASE + 0x0054) +#define PWM_OSCUPD MMIO32(PWM_BASE + 0x0058) +#define PWM_FMR MMIO32(PWM_BASE + 0x005C) +#define PWM_FSR MMIO32(PWM_BASE + 0x0060) +#define PWM_FCR MMIO32(PWM_BASE + 0x0064) +#define PWM_FPV MMIO32(PWM_BASE + 0x0068) +#define PWM_FPE1 MMIO32(PWM_BASE + 0x006C) +#define PWM_FPE2 MMIO32(PWM_BASE + 0x0070) +/* 0x0074:0x0078 - Reserved */ +#define PWM_ELMR0 MMIO32(PWM_BASE + 0x007C) +#define PWM_ELMR1 MMIO32(PWM_BASE + 0x0080) +/* 0x0084:0x00AC - Reserved */ +#define PWM_SMMR MMIO32(PWM_BASE + 0x00B0) +/* 0x00B4:0x00E0 - Reserved */ +#define PWM_WPCR MMIO32(PWM_BASE + 0x00E4) +#define PWM_WPSR MMIO32(PWM_BASE + 0x00E8) +/* 0x00EC:0x00FC - Reserved */ +/* 0x0100:0x012C - Reserved */ +#define PWM_CMPV(x) MMIO32(PWM_BASE + 0x0130 + 0x10*(x)) +#define PWM_CMPVUPD(x) MMIO32(PWM_BASE + 0x0134 + 0x10*(x)) +#define PWM_CMMV(x) MMIO32(PWM_BASE + 0x0138 + 0x10*(x)) +#define PWM_CMMVUPD(x) MMIO32(PWM_BASE + 0x013C + 0x10*(x)) +/* 0x01B0:0x01FC - Reserved */ +#define PWM_CMR(x) MMIO32(PWM_BASE + 0x0200 + 0x20*(x)) +#define PWM_CDTY(x) MMIO32(PWM_BASE + 0x0204 + 0x20*(x)) +#if defined(SAM3X) +# define PWM_CDTYUPD(x) MMIO32(PWM_BASE + 0x0208 + 0x20*(x)) +# define PWM_CPRD(x) MMIO32(PWM_BASE + 0x020C + 0x20*(x)) +# define PWM_CPRDUPD(x) MMIO32(PWM_BASE + 0x0210 + 0x20*(x)) +# define PWM_CCNT(x) MMIO32(PWM_BASE + 0x0214 + 0x20*(x)) +# define PWM_DT(x) MMIO32(PWM_BASE + 0x0218 + 0x20*(x)) +# define PWM_DTUPD(x) MMIO32(PWM_BASE + 0x021C + 0x20*(x)) +#elif defined(SAM3N) +# define PWM_CPRD(x) MMIO32(PWM_BASE + 0x0208 + 0x20*(x)) +# define PWM_CCNT(x) MMIO32(PWM_BASE + 0x020C + 0x20*(x)) +# define PWM_CUPD(x) MMIO32(PWM_BASE + 0x0210 + 0x20*(x)) +#else +# error "Processor family not defined." +#endif + +static inline void pwm_set_period(int ch, uint32_t period) +{ + PWM_CPRD(ch) = period; +} + +static inline void pwm_set_duty(int ch, uint32_t duty) +{ + PWM_CDTY(ch) = duty; +} + +static inline void pwm_enable(int ch) +{ + PWM_ENA = 1 << ch; +} + +static inline void pwm_disable(int ch) +{ + PWM_DIS = 1 << ch; +} + +#endif |