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106 lines
4.0 KiB
106 lines
4.0 KiB
/******************************************************************************
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* The MIT License
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*
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* Copyright (c) 2012 LeafLabs, LLC.
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use, copy,
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* modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*****************************************************************************/
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/**
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* @file wirish/stm32f1/boards_setup.cpp
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* @author Marti Bolivar <mbolivar@leaflabs.com>
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* @brief STM32F1 chip setup.
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*
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* This file controls how init() behaves on the STM32F1. Be very
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* careful when changing anything here. Many of these values depend
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* upon each other.
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*/
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#include "boards_private.h"
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#include <libmaple/gpio.h>
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#include <libmaple/timer.h>
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#include <boards.h>
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#include <usb_serial.h>
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// Allow boards to provide a PLL multiplier. This is useful for
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// e.g. STM32F100 value line MCUs, which use slower multipliers.
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// (We're leaving the default to RCC_PLLMUL_9 for now, since that
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// works for F103 performance line MCUs, which is all that LeafLabs
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// currently officially supports).
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namespace wirish {
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namespace priv {
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static stm32f1_rcc_pll_data pll_data = {RCC_PLLMUL_6};
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#if !USE_HSI_CLOCK
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__weak rcc_pll_cfg w_board_pll_cfg = {RCC_PLLSRC_HSE, &pll_data};
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#else
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__weak rcc_pll_cfg w_board_pll_cfg = {RCC_PLLSRC_HSI_DIV_2, &pll_data};
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#endif
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__weak adc_prescaler w_adc_pre = ADC_PRE_PCLK2_DIV_6;
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__weak adc_smp_rate w_adc_smp = ADC_SMPR_55_5;
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__weak void board_reset_pll(void) {
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// TODO
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}
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__weak void board_setup_clock_prescalers(void) {
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rcc_set_prescaler(RCC_PRESCALER_AHB, RCC_AHB_SYSCLK_DIV_1);
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rcc_set_prescaler(RCC_PRESCALER_APB1, RCC_APB1_HCLK_DIV_2);
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rcc_set_prescaler(RCC_PRESCALER_APB2, RCC_APB2_HCLK_DIV_1);
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rcc_clk_disable(RCC_USB);
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#if F_CPU == 72000000
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rcc_set_prescaler(RCC_PRESCALER_USB, RCC_USB_SYSCLK_DIV_1_5);
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#elif F_CPU == 48000000
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rcc_set_prescaler(RCC_PRESCALER_USB, RCC_USB_SYSCLK_DIV_1);
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#endif
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}
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__weak void board_setup_gpio(void) {
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gpio_init_all();
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}
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__weak void board_setup_usb(void) {
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#ifdef SERIAL_USB
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#ifdef GENERIC_BOOTLOADER
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//Reset the USB interface on generic boards - developed by Victor PV
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gpio_set_mode(PIN_MAP[PA12].gpio_device, PIN_MAP[PA12].gpio_bit, GPIO_OUTPUT_PP);
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gpio_write_bit(PIN_MAP[PA12].gpio_device, PIN_MAP[PA12].gpio_bit,0);
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for(volatile unsigned int i=0;i<512;i++);// Only small delay seems to be needed, and USB pins will get configured in Serial.begin
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gpio_set_mode(PIN_MAP[PA12].gpio_device, PIN_MAP[PA12].gpio_bit, GPIO_INPUT_FLOATING);
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#endif
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Serial.begin();// Roger Clark. Changed SerialUSB to Serial for Arduino sketch compatibility
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#endif
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}
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__weak void series_init(void) {
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// Initialize AFIO here, too, so peripheral remaps and external
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// interrupts work out of the box.
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afio_init();
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}
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}
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}
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