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Added a bunch of register definitions and gpio_set() to LPC17xx gpio.

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This commit is contained in:
Taylor Vesely 2012-03-26 16:43:43 -06:00
parent fa1c6bc632
commit bf2b8aad2f
3 changed files with 98 additions and 1 deletions
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9
examples/lpc17xx/blueboard-lpc1768-h/miniblink/miniblink.c
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@ -33,7 +33,14 @@ int main(void)
/* Blink LED0 (P3_0) on the board. */ /* Blink LED0 (P3_0) on the board. */
while (1) { while (1) {
/* Manually: */ /* Manually: */
GPIO1_SET = (1 << 29); /* LED off */ //GPIO1_SET = (1 << 29); /* LED off */
//for (i = 0; i < 800000; i++) /* Wait a bit. */
// __asm__("nop");
//GPIO1_CLR = (1 << 29); /* LED on */
//for (i = 0; i < 800000; i++) /* Wait a bit. */
// __asm__("nop");
gpio_set(GPIO1, GPIOPIN29); /* LED off */
for (i = 0; i < 800000; i++) /* Wait a bit. */ for (i = 0; i < 800000; i++) /* Wait a bit. */
__asm__("nop"); __asm__("nop");
GPIO1_CLR = (1 << 29); /* LED on */ GPIO1_CLR = (1 << 29); /* LED on */

65
include/libopencm3/lpc17xx/gpio.h
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@ -34,6 +34,37 @@
/* GPIO number definitions (for convenience) */ /* GPIO number definitions (for convenience) */
#define GPIOPIN0 (1 << 0) #define GPIOPIN0 (1 << 0)
#define GPIOPIN1 (1 << 1)
#define GPIOPIN2 (1 << 2)
#define GPIOPIN3 (1 << 3)
#define GPIOPIN4 (1 << 4)
#define GPIOPIN5 (1 << 5)
#define GPIOPIN6 (1 << 6)
#define GPIOPIN7 (1 << 7)
#define GPIOPIN8 (1 << 8)
#define GPIOPIN9 (1 << 9)
#define GPIOPIN10 (1 << 10)
#define GPIOPIN11 (1 << 11)
#define GPIOPIN12 (1 << 12)
#define GPIOPIN13 (1 << 13)
#define GPIOPIN14 (1 << 14)
#define GPIOPIN15 (1 << 15)
#define GPIOPIN16 (1 << 16)
#define GPIOPIN17 (1 << 17)
#define GPIOPIN18 (1 << 18)
#define GPIOPIN19 (1 << 19)
#define GPIOPIN20 (1 << 20)
#define GPIOPIN21 (1 << 21)
#define GPIOPIN22 (1 << 22)
#define GPIOPIN23 (1 << 23)
#define GPIOPIN24 (1 << 24)
#define GPIOPIN25 (1 << 25)
#define GPIOPIN26 (1 << 26)
#define GPIOPIN27 (1 << 27)
#define GPIOPIN28 (1 << 28)
#define GPIOPIN29 (1 << 29)
#define GPIOPIN30 (1 << 30)
#define GPIOPIN31 (1 << 31)
/* --- GPIO registers ------------------------------------------------------ */ /* --- GPIO registers ------------------------------------------------------ */
@ -45,6 +76,14 @@
#define GPIO3_DIR GPIO_DIR(GPIO3) #define GPIO3_DIR GPIO_DIR(GPIO3)
#define GPIO4_DIR GPIO_DIR(GPIO4) #define GPIO4_DIR GPIO_DIR(GPIO4)
/* GPIO fast mask register (GPIOn_DIR) */
#define GPIO_MASK(port) MMIO32(port + 0x10)
#define GPIO0_MASK GPIO_MASK(GPIO0)
#define GPIO1_MASK GPIO_MASK(GPIO1)
#define GPIO2_MASK GPIO_MASK(GPIO2)
#define GPIO3_MASK GPIO_MASK(GPIO3)
#define GPIO4_MASK GPIO_MASK(GPIO4)
/* GPIO port pin value register (GPIOn_PIN) */ /* GPIO port pin value register (GPIOn_PIN) */
#define GPIO_PIN(port) MMIO32(port + 0x14) #define GPIO_PIN(port) MMIO32(port + 0x14)
#define GPIO0_PIN GPIO_PIN(GPIO0) #define GPIO0_PIN GPIO_PIN(GPIO0)
@ -69,4 +108,30 @@
#define GPIO3_CLR GPIO_CLR(GPIO3) #define GPIO3_CLR GPIO_CLR(GPIO3)
#define GPIO4_CLR GPIO_CLR(GPIO4) #define GPIO4_CLR GPIO_CLR(GPIO4)
/* GPIO interrupt register map */
/* Interrupt enable rising edge */
#define GPIO0_IER MMIO32(GPIOINTERRPUT_BASE + 0x90)
#define GPIO2_IER MMIO32(GPIOINTERRPUT_BASE + 0xB0)
/* Interrupt enable falling edge */
#define GPIO0_IEF MMIO32(GPIOINTERRPUT_BASE + 0x94)
#define GPIO2_IEF MMIO32(GPIOINTERRPUT_BASE + 0xB4)
/* Interrupt status rising edge */
#define GPIO0_ISR MMIO32(GPIOINTERRPUT_BASE + 0x84)
#define GPIO2_ISR MMIO32(GPIOINTERRPUT_BASE + 0xA4)
/* Interrupt status falling edge */
#define GPIO0_ISF MMIO32(GPIOINTERRPUT_BASE + 0x88)
#define GPIO2_ISF MMIO32(GPIOINTERRPUT_BASE + 0xA8)
/* Interrupt clear */
#define GPIO0_IC MMIO32(GPIOINTERRPUT_BASE + 0x8C)
#define GPIO1_IC MMIO32(GPIOINTERRPUT_BASE + 0xAC)
/* Overall interrupt status */
#define GPIO_IS MMIO32(GPIOINTERRPUT_BASE + 0x80)
void gpio_set(u32 gpioport, u32 gpios);
#endif #endif

25
lib/lpc17xx/gpio.c
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@ -0,0 +1,25 @@
/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de>
*
* 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/>.
*/
#include <libopencm3/lpc17xx/gpio.h>
void gpio_set(u32 gpioport, u32 gpios)
{
GPIO_SET(gpioport) = gpios;
}