705cdab7d7
most of this is non-functional but just a list of stubs that are absolutely required to make it compile
116 lines
2.7 KiB
C
116 lines
2.7 KiB
C
/*
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* This file is part of the libopencm3 project.
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*
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* Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
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* Copyright (C) 2012 chrysn <chrysn@fsfe.org>
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*
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* This library is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <efm32_acmp.h>
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#include <efm32_adc.h>
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#include <efm32_aes.h>
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#include <efm32_assert.h>
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#include <efm32_bitband.h>
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#include <efm32_burtc.h>
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#include <efm32_chip.h>
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#include <efm32_cmu.h>
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#include <efm32_common.h>
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#include <efm32_dac.h>
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#include <efm32_dbg.h>
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#include <efm32_dma.h>
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#include <efm32_ebi.h>
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#include <efm32_emu.h>
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#include <efm32_gpio.h>
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#include <efm32_i2c.h>
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#include <efm32_int.h>
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#include <efm32_lcd.h>
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#include <efm32_lesense.h>
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#include <efm32_letimer.h>
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#include <efm32_leuart.h>
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#include <efm32_mpu.h>
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#include <efm32_msc.h>
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#include <efm32_opamp.h>
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#include <efm32_pcnt.h>
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#include <efm32_prs.h>
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#include <efm32_rmu.h>
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#include <efm32_rtc.h>
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#include <efm32_system.h>
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#include <efm32_timer.h>
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#include <efm32_usart.h>
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#include <efm32_vcmp.h>
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#include <efm32_version.h>
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#include <efm32_wdog.h>
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#include <stdio.h>
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void setup(void);
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void led_toggle(void);
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bool button_is_pressed(void);
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void debug(int a);
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#define LOG_SIZE 1024
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volatile char logbuffer[LOG_SIZE];
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int main(void)
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{
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int x;
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int n_pressed = 0;
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setup();
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while(1) {
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if (button_is_pressed())
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{
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for(x = 0; x < 200000; ++x) asm("mov r0,r0"); /* no-op, prevent compiler from optimizing this away */
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n_pressed += 1;
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debug(n_pressed);
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}
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led_toggle();
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};
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}
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void debug(int a)
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{
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snprintf(logbuffer, LOG_SIZE, "Data %d.\n", a);
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}
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void setup(void)
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{
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// Before GPIO works, according to d0034_efm32tg_reference_manual.pdf
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// note in section 28.3.7, we'll have to enable GPIO in CMU_HFPERCLKEN0
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CMU->HFPERCLKEN0 |= _CMU_HFPERCLKEN0_GPIO_MASK;
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GPIO_PinModeSet(gpioPortE, 1, gpioModePushPull, 0);
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GPIO_PinModeSet(gpioPortE, 2, gpioModePushPull, 0);
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GPIO_PinModeSet(gpioPortE, 0, gpioModeInputPull, 1); /* pull up */
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// Counter-blink the other user LED
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GPIO_PinOutToggle(gpioPortE, 2);
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}
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void led_toggle(void)
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{
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GPIO_PinOutToggle(gpioPortE, 1);
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GPIO_PinOutToggle(gpioPortE, 2);
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}
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bool button_is_pressed(void)
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{
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return !GPIO_PinInGet(gpioPortE, 0);
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}
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