74 lines
2 KiB
C
74 lines
2 KiB
C
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/*
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* Nov 2015 Karl Palsson <karlp@tweak.net.au>
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*/
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#include <errno.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <libopencm3/cm3/nvic.h>
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#include <libopencm3/stm32/flash.h>
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#include <libopencm3/stm32/gpio.h>
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#include <libopencm3/stm32/pwr.h>
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#include <libopencm3/stm32/rcc.h>
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#include "trace.h"
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#include "adc-power.h"
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#define LED_DISCO_RED_PORT GPIOB
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#define LED_DISCO_RED_PIN GPIO2
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#define LED_DISCO_GREEN_PORT GPIOE
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#define LED_DISCO_GREEN_PIN GPIO8
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static int hack(void) {
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pwr_set_vos_scale(PWR_SCALE1);
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flash_set_ws(FLASH_ACR_LATENCY_2WS);
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rcc_set_msi_range(RCC_CR_MSIRANGE_48MHZ);
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return 0;
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}
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int main(void)
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{
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int i;
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int j = 0;
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rcc_periph_clock_enable(RCC_GPIOB); // led
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rcc_periph_clock_enable(RCC_GPIOE); // led
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rcc_periph_clock_enable(RCC_GPIOA); // adcs
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rcc_periph_clock_enable(RCC_GPIOC); // adcs
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rcc_periph_clock_enable(RCC_PWR);
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hack();
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printf("hi guys!\n");
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/* green led for ticking */
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gpio_mode_setup(LED_DISCO_GREEN_PORT, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE,
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LED_DISCO_GREEN_PIN);
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gpio_mode_setup(LED_DISCO_RED_PORT, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE,
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LED_DISCO_RED_PIN);
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/* ADC 1 channels 1 and 5 */
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// This is the reset state, so not really necessary.
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gpio_mode_setup(GPIOA, GPIO_MODE_ANALOG, GPIO_PUPD_NONE, GPIO0);
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gpio_mode_setup(GPIOA, GPIO_MODE_ANALOG, GPIO_PUPD_NONE, GPIO1);
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gpio_mode_setup(GPIOA, GPIO_MODE_ANALOG, GPIO_PUPD_NONE, GPIO2);
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gpio_mode_setup(GPIOA, GPIO_MODE_ANALOG, GPIO_PUPD_NONE, GPIO3);
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gpio_mode_setup(GPIOA, GPIO_MODE_ANALOG, GPIO_PUPD_NONE, GPIO5);
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// This is NOT the reset state! very important!
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GPIO_ASCR(GPIOA) |= GPIO0 | GPIO1 | GPIO2 | GPIO3 | GPIO5;
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adc_power_init();
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while (1) {
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adc_power_task_up();
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gpio_toggle(LED_DISCO_GREEN_PORT, LED_DISCO_GREEN_PIN);
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for (i = 0; i < 0x10000; i++) { /* Wait a bit. */
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__asm__("NOP");
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}
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adc_power_task_down();
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gpio_toggle(LED_DISCO_RED_PORT, LED_DISCO_RED_PIN);
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for (i = 0; i < 0x10000; i++) { /* Wait a bit. */
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__asm__("NOP");
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}
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}
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return 0;
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}
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