/* * This file is part of the libopencm3 project. * * Copyright (C) 2010 Uwe Hermann * Copyright (C) 2012 Michael Ossmann * * 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 . */ #include #include #include "../jellybean_conf.h" void gpio_setup(void) { /* Configure SCU Pin Mux as GPIO */ scu_pinmux(SCU_PINMUX_LED1, SCU_GPIO_FAST); scu_pinmux(SCU_PINMUX_LED2, SCU_GPIO_FAST); scu_pinmux(SCU_PINMUX_LED3, SCU_GPIO_FAST); scu_pinmux(SCU_PINMUX_EN1V8, SCU_GPIO_FAST); scu_pinmux(SCU_PINMUX_BOOT0, SCU_GPIO_FAST); scu_pinmux(SCU_PINMUX_BOOT1, SCU_GPIO_FAST); scu_pinmux(SCU_PINMUX_BOOT2, SCU_GPIO_FAST); scu_pinmux(SCU_PINMUX_BOOT3, SCU_GPIO_FAST); /* Configure all GPIO as Input (safe state) */ GPIO0_DIR = 0; GPIO1_DIR = 0; GPIO2_DIR = 0; GPIO3_DIR = 0; GPIO4_DIR = 0; GPIO5_DIR = 0; GPIO6_DIR = 0; GPIO7_DIR = 0; /* Configure GPIO as Output */ GPIO2_DIR |= (PIN_LED1|PIN_LED2|PIN_LED3); /* Configure GPIO2[1/2/8] (P4_1/2 P6_12) as output. */ GPIO3_DIR |= PIN_EN1V8; /* GPIO3[6] on P6_10 as output. */ } u32 boot0, boot1, boot2, boot3; int main(void) { int i; gpio_setup(); /* Set 1V8 */ gpio_set(PORT_EN1V8, PIN_EN1V8); /* Blink LED1/2/3 on the board and Read BOOT0/1/2/3 pins. */ while (1) { boot0 = BOOT0_STATE; boot1 = BOOT1_STATE; boot2 = BOOT2_STATE; boot3 = BOOT3_STATE; gpio_set(PORT_LED1_3, (PIN_LED1|PIN_LED2|PIN_LED3)); /* LEDs on */ for (i = 0; i < 2000000; i++) /* Wait a bit. */ __asm__("nop"); gpio_clear(PORT_LED1_3, (PIN_LED1|PIN_LED2|PIN_LED3)); /* LED off */ for (i = 0; i < 2000000; i++) /* Wait a bit. */ __asm__("nop"); } return 0; }