mirror of
https://github.com/RIOT-OS/RIOT.git
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161 lines
4.6 KiB
C
161 lines
4.6 KiB
C
/*
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* gpio.h - GPIO driver for redbee
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* Copyright (C) 2013 Thomas Eichinger <thomas.eichinger@fu-berlin.de>
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*
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* This source code is licensed under the GNU General Public License,
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* Version 3. See the file LICENSE for more details.
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*
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* This file is part of RIOT.
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*/
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#ifndef GPIO_H
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#define GPIO_H
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// TODO: why do we need to include this for macro expansion?
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#include <stdint.h>
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/* Structure-based GPIO access
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Example usage:
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GPIO->FUNC_SEL0 |= 0x00008000; // set a whole register
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GPIO->FUNC_SEL_08 = 2; // set just one pin
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#define MY_PIN GPIO_08
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GPIO->FUNC_SEL.MY_PIN = 2; // same, to allow #define for pin names
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GPIO->DATA.MY_PIN = 1;
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gpio_set(GPIO_08); // efficiently set or clear a single output bit
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gpio_reset(GPIO_08);
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*/
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// GPIO to Function Alias macros:
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#define ADC0 GPIO_30
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#define ADC1 GPIO_31
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#define ADC2 GPIO_32
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#define ADC3 GPIO_33
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#define ADC4 GPIO_34
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#define ADC5 GPIO_35
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#define ADC6 GPIO_36
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#define ADC7 GPIO_37
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#define TDO GPIO_49
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#define TDI GPIO_48
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#define TCK GPIO_47
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#define TMS GPIO_46
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#define U2RTS GPIO_21
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#define U2CTS GPIO_20
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#define U2RX GPIO_19
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#define U2TX GPIO_18
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#define U1RTS GPIO_17
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#define U1CTS GPIO_16
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#define U1RX GPIO_15
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#define U1TX GPIO_14
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#define SDA GPIO_13
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#define SCL GPIO_12
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#define TMR3 GPIO_11
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#define TMR2 GPIO_10
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#define TMR1 GPIO_09
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#define TMR0 GPIO_08
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#define SCK GPIO_07
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#define MOSI GPIO_06
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#define MISO GPIO_05
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#define SS GPIO_04
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#define BTCK GPIO_03
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#define FSYN GPIO_02
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#define SSIRX GPIO_01
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#define SSITX GPIO_00
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#define KBI7 GPIO_29
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#define KBI6 GPIO_28
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#define KBI5 GPIO_27
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#define KBI4 GPIO_26
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#define KBI3 GPIO_25
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#define KBI2 GPIO_24
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#define KBI1 GPIO_23
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#define KBI0 GPIO_22
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#define TXON GPIO_44
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#define RXON GPIO_45
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#define ANT1 GPIO_42
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#define ANT2 GPIO_43
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#define VREF2H GPIO_38
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#define VREF2L GPIO_39
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#define VREF1H GPIO_40
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#define VREF1L GPIO_41
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#define MDO0 GPIO_51
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#define MDO1 GPIO_52
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#define MDO2 GPIO_53
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#define MDO3 GPIO_54
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#define MDO4 GPIO_55
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#define MDO5 GPIO_56
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#define MDO6 GPIO_57
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#define MDO7 GPIO_58
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#define MSEO0 GPIO_59
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#define MSEO1 GPIO_60
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#define RDY GPIO_61
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#define EVTO GPIO_62
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#define MCKO GPIO_50
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#define EVTI GPIO_63
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#define _V(x,n,i) uint32_t x##_##i : n;
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#define _REP(x,n) \
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_V(x,n,00) _V(x,n,01) _V(x,n,02) _V(x,n,03) _V(x,n,04) _V(x,n,05) _V(x,n,06) _V(x,n,07) \
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_V(x,n,08) _V(x,n,09) _V(x,n,10) _V(x,n,11) _V(x,n,12) _V(x,n,13) _V(x,n,14) _V(x,n,15) \
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_V(x,n,16) _V(x,n,17) _V(x,n,18) _V(x,n,19) _V(x,n,20) _V(x,n,21) _V(x,n,22) _V(x,n,23) \
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_V(x,n,24) _V(x,n,25) _V(x,n,26) _V(x,n,27) _V(x,n,28) _V(x,n,29) _V(x,n,30) _V(x,n,31) \
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_V(x,n,32) _V(x,n,33) _V(x,n,34) _V(x,n,35) _V(x,n,36) _V(x,n,37) _V(x,n,38) _V(x,n,39) \
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_V(x,n,40) _V(x,n,41) _V(x,n,42) _V(x,n,43) _V(x,n,44) _V(x,n,45) _V(x,n,46) _V(x,n,47) \
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_V(x,n,48) _V(x,n,49) _V(x,n,50) _V(x,n,51) _V(x,n,52) _V(x,n,53) _V(x,n,54) _V(x,n,55) \
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_V(x,n,56) _V(x,n,57) _V(x,n,58) _V(x,n,59) _V(x,n,60) _V(x,n,61) _V(x,n,62) _V(x,n,63)
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struct GPIO_struct {
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#define _IO(x) \
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union { struct { uint32_t x##0; uint32_t x##1; }; \
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struct { _REP(x, 1) }; \
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struct GPIO_##x { _REP(GPIO, 1) } x; };
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#define _IO_2bit(x) \
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union { struct { uint32_t x##0; uint32_t x##1; uint32_t x##2; uint32_t x##3; }; \
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struct { _REP(x, 2) }; \
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struct GPIO_##x { _REP(GPIO, 2) } x; };
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_IO(PAD_DIR);
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_IO(DATA);
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_IO(PAD_PU_EN);
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_IO_2bit(FUNC_SEL);
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_IO(DATA_SEL);
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_IO(PAD_PU_SEL);
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_IO(PAD_HYST_EN);
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_IO(PAD_KEEP);
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_IO(DATA_SET);
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_IO(DATA_RESET);
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_IO(PAD_DIR_SET);
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_IO(PAD_DIR_RESET);
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};
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#undef _IO
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#undef _IO_2bit
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/* Build an enum lookup to map GPIO_08 -> 8 */
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#undef _V
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#define _V(x,n,i) __NUM_GPIO_GPIO_##i,
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enum { _REP(0,0) };
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/* Macros to set or reset a data pin in the fastest possible way */
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#define gpio_set(gpio_xx) __gpio_set(gpio_xx)
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#define __gpio_set(gpio_xx) \
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((__NUM_GPIO_##gpio_xx < 32) \
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? (GPIO->DATA_SET0 = (1 << (__NUM_GPIO_##gpio_xx - 0))) \
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: (GPIO->DATA_SET1 = (1 << (__NUM_GPIO_##gpio_xx - 32))))
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#define gpio_reset(gpio_xx) __gpio_reset(gpio_xx)
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#define __gpio_reset(gpio_xx) \
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((__NUM_GPIO_##gpio_xx < 32) \
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? (GPIO->DATA_RESET0 = (1 << (__NUM_GPIO_##gpio_xx - 0))) \
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: (GPIO->DATA_RESET1 = (1 << (__NUM_GPIO_##gpio_xx - 32))))
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#undef _REP
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#undef _V
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static volatile struct GPIO_struct * const GPIO = (void *) (0x80000000);
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#endif
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