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authorPiotr Esden-Tempski2012-08-28 15:56:29 -0700
committerPiotr Esden-Tempski2012-09-10 14:01:24 -0700
commitdcd98dde86c68340e950d12b078d24fd30bef625 (patch)
tree13c79f2379e0f6a751d2baf581677f217eda9579 /examples/stm32/f1/lisa-m-2/adc/adc.c
parentd1cc8ca2b3455019391d8a6fda5f66b952c3aea7 (diff)
Renamed adc example to be more descriptive.
Diffstat (limited to 'examples/stm32/f1/lisa-m-2/adc/adc.c')
-rw-r--r--examples/stm32/f1/lisa-m-2/adc/adc.c162
1 files changed, 0 insertions, 162 deletions
diff --git a/examples/stm32/f1/lisa-m-2/adc/adc.c b/examples/stm32/f1/lisa-m-2/adc/adc.c
deleted file mode 100644
index 91d029f..0000000
--- a/examples/stm32/f1/lisa-m-2/adc/adc.c
+++ /dev/null
@@ -1,162 +0,0 @@
-/*
- * This file is part of the libopencm3 project.
- *
- * Copyright (C) 2010 Thomas Otto <tommi@viadmin.org>
- * Copyright (C) 2012 Piotr Esden-Tempski <piotr@esden.net>
- *
- * 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/stm32/f1/rcc.h>
-#include <libopencm3/stm32/f1/flash.h>
-#include <libopencm3/stm32/f1/gpio.h>
-#include <libopencm3/stm32/f1/adc.h>
-#include <libopencm3/stm32/usart.h>
-
-void usart_setup(void)
-{
- /* Enable clocks for GPIO port A (for GPIO_USART1_TX) and USART1. */
- rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPAEN);
- rcc_peripheral_enable_clock(&RCC_APB1ENR, RCC_APB1ENR_USART2EN);
-
- /* Setup GPIO pin GPIO_USART1_TX/GPIO9 on GPIO port A for transmit. */
- gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_50_MHZ,
- GPIO_CNF_OUTPUT_ALTFN_PUSHPULL, GPIO_USART2_TX);
-
- /* Setup UART parameters. */
- usart_set_baudrate(USART2, 115200);
- usart_set_databits(USART2, 8);
- usart_set_stopbits(USART2, USART_STOPBITS_1);
- usart_set_mode(USART2, USART_MODE_TX_RX);
- usart_set_parity(USART2, USART_PARITY_NONE);
- usart_set_flow_control(USART2, USART_FLOWCONTROL_NONE);
-
- /* Finally enable the USART. */
- usart_enable(USART2);
-}
-
-void gpio_setup(void)
-{
- /* Enable GPIO clocks. */
- rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPAEN);
- rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPCEN);
-
- /* Setup the LEDs. */
- gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_2_MHZ,
- GPIO_CNF_OUTPUT_PUSHPULL, GPIO8);
- gpio_set_mode(GPIOC, GPIO_MODE_OUTPUT_2_MHZ,
- GPIO_CNF_OUTPUT_PUSHPULL, GPIO15);
-}
-
-void adc_setup(void)
-{
- int i;
-
- rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_ADC1EN);
-
- /* Make sure the ADC doesn't run during config. */
- adc_off(ADC1);
-
- /* We configure everything for one single conversion. */
- adc_disable_scan_mode(ADC1);
- adc_set_single_conversion_mode(ADC1);
- adc_enable_discontinous_mode_regular(ADC1);
- adc_disable_external_trigger_regular(ADC1);
- adc_set_right_aligned(ADC1);
- /* We want to read the temperature sensor, so we have to enable it. */
- adc_enable_temperature_sensor(ADC1);
- adc_set_conversion_time_on_all_channels(ADC1, ADC_SMPR_SMP_28DOT5CYC);
-
- adc_on(ADC1);
-
- /* Wait for ADC starting up. */
- for (i = 0; i < 800000; i++) /* Wait a bit. */
- __asm__("nop");
-
- adc_reset_calibration(ADC1);
- adc_calibration(ADC1);
-}
-
-void my_usart_print_int(u32 usart, int value)
-{
- s8 i;
- u8 nr_digits = 0;
- char buffer[25];
-
- if (value < 0) {
- usart_send_blocking(usart, '-');
- value = value * -1;
- }
-
- while (value > 0) {
- buffer[nr_digits++] = "0123456789"[value % 10];
- value /= 10;
- }
-
- for (i = nr_digits; i >= 0; i--) {
- usart_send_blocking(usart, buffer[i]);
- }
-
- usart_send_blocking(usart, '\r');
-}
-
-int main(void)
-{
- u8 channel_array[16];
- u16 temperature = 0;
-
- rcc_clock_setup_in_hse_12mhz_out_72mhz();
- gpio_setup();
- usart_setup();
- adc_setup();
-
- gpio_set(GPIOA, GPIO8); /* LED1 on */
- gpio_set(GPIOC, GPIO15); /* LED2 off */
-
- /* Send a message on USART1. */
- usart_send_blocking(USART2, 's');
- usart_send_blocking(USART2, 't');
- usart_send_blocking(USART2, 'm');
- usart_send_blocking(USART2, '\r');
- usart_send_blocking(USART2, '\n');
-
- /* Select the channel we want to convert. 16=temperature_sensor. */
- channel_array[0] = 16;
- adc_set_regular_sequence(ADC1, 1, channel_array);
-
- /* Continously convert and poll the temperature ADC. */
- while (1) {
- /*
- * If the ADC_CR2_ON bit is already set -> setting it another time
- * starts the conversion.
- */
- adc_on(ADC1);
-
- /* Wait for end of conversion. */
- while (!(ADC_SR(ADC1) & ADC_SR_EOC));
-
- temperature = ADC_DR(ADC1);
-
- /*
- * That's actually not the real temperature - you have to compute it
- * as described in the datasheet.
- */
- my_usart_print_int(USART2, temperature);
-
- gpio_toggle(GPIOA, GPIO8); /* LED2 on */
-
- }
-
- return 0;
-}