d9536caeaa
My bad, I'd been testing my header includes against a branch with some draft unification of the adc code. ADC is one of the remaining major peripherals that isn't unified neatly.
158 lines
4.6 KiB
C
158 lines
4.6 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) 2011 Stephen Caudle <scaudle@doceme.com>
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* Modified by Fernando Cortes <fermando.corcam@gmail.com>
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* modified by Guillermo Rivera <memogrg@gmail.com>
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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 <libopencm3/stm32/rcc.h>
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#include <libopencm3/stm32/f3/adc.h>
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#include <libopencm3/stm32/usart.h>
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#include <libopencm3/stm32/gpio.h>
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#define LBLUE GPIOE, GPIO8
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#define LRED GPIOE, GPIO9
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#define LORANGE GPIOE, GPIO10
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#define LGREEN GPIOE, GPIO11
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#define LBLUE2 GPIOE, GPIO12
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#define LRED2 GPIOE, GPIO13
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#define LORANGE2 GPIOE, GPIO14
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#define LGREEN2 GPIOE, GPIO15
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#define LD4 GPIOE, GPIO8
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#define LD3 GPIOE, GPIO9
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#define LD5 GPIOE, GPIO10
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#define LD7 GPIOE, GPIO11
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#define LD9 GPIOE, GPIO12
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#define LD10 GPIOE, GPIO13
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#define LD8 GPIOE, GPIO14
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#define LD6 GPIOE, GPIO15
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void adc_setup(void) {
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//ADC
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rcc_peripheral_enable_clock(&RCC_AHBENR, RCC_AHBENR_ADC12EN);
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rcc_peripheral_enable_clock(&RCC_AHBENR, RCC_AHBENR_IOPAEN);
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//ADC
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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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adc_off(ADC1);
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adc_set_clk_prescale(ADC_CCR_CKMODE_DIV2);
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adc_set_single_conversion_mode(ADC1);
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adc_disable_external_trigger_regular(ADC1);
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adc_set_right_aligned(ADC1);
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/* We want to read the temperature sensor, so we have to enable it. */
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adc_enable_temperature_sensor();
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adc_set_sample_time_on_all_channels(ADC1, ADC_SMPR1_SMP_61DOT5CYC);
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uint8_t channel_array[16];
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channel_array[0]=16; // Vts (Internal temperature sensor
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channel_array[0]=1; //ADC1_IN1 (PA0)
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adc_set_regular_sequence(ADC1, 1, channel_array);
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adc_set_resolution(ADC1, ADC_CFGR_RES_12_BIT);
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adc_power_on(ADC1);
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/* Wait for ADC starting up. */
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int i;
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for (i = 0; i < 800000; i++) /* Wait a bit. */
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__asm__("nop");
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}
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void usart_setup(void) {
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/* Enable clocks for GPIO port A (for GPIO_USART2_TX) and USART2. */
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rcc_peripheral_enable_clock(&RCC_APB1ENR, RCC_APB1ENR_USART2EN);
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rcc_peripheral_enable_clock(&RCC_AHBENR, RCC_AHBENR_IOPAEN);
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/* Setup GPIO pin GPIO_USART2_TX/GPIO9 on GPIO port A for transmit. */
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gpio_mode_setup(GPIOA, GPIO_MODE_AF, GPIO_PUPD_NONE, GPIO2 | GPIO3);
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gpio_set_af(GPIOA, GPIO_AF7, GPIO2| GPIO3);
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/* Setup UART parameters. */
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usart_set_baudrate(USART2, 115200);
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usart_set_databits(USART2, 8);
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usart_set_stopbits(USART2, USART_STOPBITS_1);
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usart_set_mode(USART2, USART_MODE_TX_RX);
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usart_set_parity(USART2, USART_PARITY_NONE);
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usart_set_flow_control(USART2, USART_FLOWCONTROL_NONE);
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/* Finally enable the USART. */
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usart_enable(USART2);
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}
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void gpio_setup(void)
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{
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rcc_peripheral_enable_clock(&RCC_AHBENR, RCC_AHBENR_IOPEEN);
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gpio_mode_setup(GPIOE, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, GPIO8| GPIO9| GPIO10| GPIO11| GPIO12| GPIO13| GPIO14| GPIO15);
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}
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void my_usart_print_int(uint32_t usart, int16_t value)
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{
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int8_t i;
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int8_t nr_digits = 0;
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char buffer[25];
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if (value < 0) {
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usart_send_blocking(usart, '-');
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value = value * -1;
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}
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if (value == 0) {
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usart_send_blocking(usart, '0');
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}
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while (value > 0) {
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buffer[nr_digits++] = "0123456789"[value % 10];
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value /= 10;
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}
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for (i = nr_digits-1; i >= 0; i--) {
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usart_send_blocking(usart, buffer[i]);
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}
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usart_send_blocking(usart, '\r');
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usart_send_blocking(usart, '\n');
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}
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void clock_setup(void) {
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//rcc_clock_setup_hsi(&hsi_8mhz[CLOCK_44MHZ]);
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rcc_clock_setup_hsi(&hsi_8mhz[CLOCK_64MHZ]);
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}
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extern unsigned _stack;
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int main(void)
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{
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uint16_t temp;
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clock_setup();
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gpio_setup();
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adc_setup();
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usart_setup();
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while (1) {
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adc_start_conversion_regular(ADC1);
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while (!(adc_eoc(ADC1)));
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temp=adc_read_regular(ADC1);
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gpio_port_write(GPIOE, temp << 4);
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my_usart_print_int(USART2, temp);
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}
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return 0;
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}
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