157 lines
4.2 KiB
C
157 lines
4.2 KiB
C
/*
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* This file is part of the Black Magic Debug project.
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*
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* Copyright (C) 2011 Black Sphere Technologies Ltd.
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* Written by Gareth McMullin <gareth@blacksphere.co.nz>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU 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 program 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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/* This file implements the platform specific functions for the ST-Link
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* implementation.
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*/
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#include "general.h"
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#include "cdcacm.h"
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#include "usbuart.h"
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#include <libopencm3/stm32/rcc.h>
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#include <libopencm3/cm3/scb.h>
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#include <libopencm3/cm3/scs.h>
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#include <libopencm3/cm3/nvic.h>
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#include <libopencm3/stm32/usart.h>
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#include <libopencm3/usb/usbd.h>
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#include <libopencm3/stm32/adc.h>
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uint16_t led_idle_run;
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uint16_t srst_pin;
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static uint32_t rev;
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static void adc_init(void);
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int platform_hwversion(void)
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{
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return rev;
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}
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void platform_init(void)
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{
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rev = detect_rev();
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SCS_DEMCR |= SCS_DEMCR_VC_MON_EN;
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#ifdef ENABLE_DEBUG
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void initialise_monitor_handles(void);
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initialise_monitor_handles();
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#endif
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rcc_clock_setup_pll(&rcc_hse_configs[RCC_CLOCK_HSE8_72MHZ]);
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if (rev == 0) {
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led_idle_run = GPIO8;
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srst_pin = SRST_PIN_V1;
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} else {
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led_idle_run = GPIO9;
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srst_pin = SRST_PIN_V2;
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}
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/* Setup GPIO ports */
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gpio_set_mode(TMS_PORT, GPIO_MODE_OUTPUT_2_MHZ,
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GPIO_CNF_INPUT_FLOAT, TMS_PIN);
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gpio_set_mode(TCK_PORT, GPIO_MODE_OUTPUT_2_MHZ,
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GPIO_CNF_OUTPUT_PUSHPULL, TCK_PIN);
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gpio_set_mode(TDI_PORT, GPIO_MODE_OUTPUT_2_MHZ,
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GPIO_CNF_OUTPUT_PUSHPULL, TDI_PIN);
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platform_srst_set_val(false);
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gpio_set_mode(LED_PORT, GPIO_MODE_OUTPUT_2_MHZ,
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GPIO_CNF_OUTPUT_PUSHPULL, led_idle_run);
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/* Relocate interrupt vector table here */
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extern int vector_table;
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SCB_VTOR = (uint32_t)&vector_table;
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platform_timing_init();
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if (rev > 1) /* Reconnect USB */
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gpio_set(GPIOA, GPIO15);
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cdcacm_init();
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/* Don't enable UART if we're being debugged. */
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if (!(SCS_DEMCR & SCS_DEMCR_TRCENA))
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usbuart_init();
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adc_init();
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}
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void platform_srst_set_val(bool assert)
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{
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if (assert) {
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gpio_set_mode(SRST_PORT, GPIO_MODE_OUTPUT_2_MHZ,
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GPIO_CNF_OUTPUT_OPENDRAIN, srst_pin);
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gpio_clear(SRST_PORT, srst_pin);
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} else {
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gpio_set_mode(SRST_PORT, GPIO_MODE_INPUT,
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GPIO_CNF_INPUT_PULL_UPDOWN, srst_pin);
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gpio_set(SRST_PORT, srst_pin);
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}
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}
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bool platform_srst_get_val()
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{
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return gpio_get(SRST_PORT, srst_pin) == 0;
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}
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static void adc_init(void)
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{
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rcc_periph_clock_enable(RCC_ADC1);
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gpio_set_mode(GPIOA, GPIO_MODE_INPUT,
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GPIO_CNF_INPUT_ANALOG, GPIO0);
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adc_power_off(ADC1);
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adc_disable_scan_mode(ADC1);
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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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adc_set_sample_time_on_all_channels(ADC1, ADC_SMPR_SMP_28DOT5CYC);
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adc_enable_temperature_sensor();
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adc_power_on(ADC1);
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/* Wait for ADC starting up. */
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for (int i = 0; i < 800000; i++) /* Wait a bit. */
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__asm__("nop");
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adc_reset_calibration(ADC1);
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adc_calibrate(ADC1);
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}
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const char *platform_target_voltage(void)
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{
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static char ret[] = "0.00V";
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const uint8_t channel = 0;
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adc_set_regular_sequence(ADC1, 1, (uint8_t*)&channel);
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adc_start_conversion_direct(ADC1);
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/* Wait for end of conversion. */
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while (!adc_eoc(ADC1));
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uint32_t platform_adc_value = adc_read_regular(ADC1);
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const uint8_t ref_channel = 17;
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adc_set_regular_sequence(ADC1, 1, (uint8_t*)&ref_channel);
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adc_start_conversion_direct(ADC1);
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/* Wait for end of conversion. */
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while (!adc_eoc(ADC1));
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uint32_t vrefint_value = adc_read_regular(ADC1);
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/* Value in mV*/
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uint32_t val = (platform_adc_value * 2400) / vrefint_value;
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ret[0] = '0' + val / 1000;
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ret[2] = '0' + (val / 100) % 10;
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ret[3] = '0' + (val / 10) % 10;
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return ret;
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}
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