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+/******************************************************************************
+ * The MIT License
+ *
+ * Copyright (c) 2012 LeafLabs, LLC.
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use, copy,
+ * modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+*****************************************************************************/
+
+/**
+ * @file wirish/stm32f1/boards_setup.cpp
+ * @author Marti Bolivar <mbolivar@leaflabs.com>
+ * @brief STM32F1 chip setup.
+ */
+
+#include <libmaple/rcc.h>
+#include <libmaple/gpio.h>
+#include <libmaple/adc.h>
+#include <libmaple/timer.h>
+#include <libmaple/usb_cdcacm.h>
+
+#include <board/board.h>
+
+/* FIXME: Reintroduce all "#if 0"'ed blocks once libmaple provides
+ * these definitions again. */
+
+namespace wirish {
+ namespace priv {
+
+ static stm32f1_rcc_pll_data pll_data = {RCC_PLLMUL_9};
+ rcc_pll_cfg board_pll_cfg = {RCC_PLLSRC_HSE, &pll_data};
+
+#if 0
+ static void config_adc(const adc_dev* dev);
+ static void config_timer(timer_dev*);
+#endif
+
+ void board_reset_pll(void) {
+ // TODO
+ }
+
+ void board_setup_clock_prescalers(void) {
+ rcc_set_prescaler(RCC_PRESCALER_AHB, RCC_AHB_SYSCLK_DIV_1);
+ rcc_set_prescaler(RCC_PRESCALER_APB1, RCC_APB1_HCLK_DIV_2);
+ rcc_set_prescaler(RCC_PRESCALER_APB2, RCC_APB2_HCLK_DIV_1);
+ }
+
+ void board_setup_gpio(void) {
+ gpio_init_all();
+ // Initialize AFIO here, too, so peripheral remaps and external
+ // interrupts work out of the box.
+ afio_init();
+ }
+
+ void board_setup_adc(void) {
+#if 0
+ rcc_set_prescaler(RCC_PRESCALER_ADC, RCC_ADCPRE_PCLK_DIV_6);
+ adc_foreach(config_adc);
+#endif
+ }
+
+ void board_setup_timers(void) {
+#if 0
+ timer_foreach(config_timer);
+#endif
+ }
+
+ void board_setup_usb(void) {
+#if 0
+ usb_cdcacm_enable(BOARD_USB_DISC_DEV, BOARD_USB_DISC_BIT);
+#endif
+ }
+
+ /*
+ * Auxiliary routines
+ */
+
+#if 0
+ static void config_adc(const adc_dev *dev) {
+ adc_init(dev);
+
+ adc_set_extsel(dev, ADC_SWSTART);
+ adc_set_exttrig(dev, true);
+
+ adc_enable(dev);
+ adc_calibrate(dev);
+ adc_set_sample_rate(dev, ADC_SMPR_55_5);
+ }
+
+ static void config_timer(timer_dev *dev) {
+ timer_adv_reg_map *regs = (dev->regs).adv;
+ const uint16 full_overflow = 0xFFFF;
+ const uint16 half_duty = 0x8FFF;
+
+ timer_init(dev);
+ timer_pause(dev);
+
+ regs->CR1 = TIMER_CR1_ARPE;
+ regs->PSC = 1;
+ regs->SR = 0;
+ regs->DIER = 0;
+ regs->EGR = TIMER_EGR_UG;
+
+ switch (dev->type) {
+ case TIMER_ADVANCED:
+ regs->BDTR = TIMER_BDTR_MOE | TIMER_BDTR_LOCK_OFF;
+ // fall-through
+ case TIMER_GENERAL:
+ timer_set_reload(dev, full_overflow);
+
+ for (int channel = 1; channel <= 4; channel++) {
+ timer_set_compare(dev, channel, half_duty);
+ timer_oc_set_mode(dev, channel, TIMER_OC_MODE_PWM_1, TIMER_OC_PE);
+ }
+ // fall-through
+ case TIMER_BASIC:
+ break;
+ }
+
+ timer_resume(dev);
+ }
+#endif
+ }
+}