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Diffstat (limited to 'wirish/stm32f2/boards_setup.cpp')
-rw-r--r-- | wirish/stm32f2/boards_setup.cpp | 120 |
1 files changed, 0 insertions, 120 deletions
diff --git a/wirish/stm32f2/boards_setup.cpp b/wirish/stm32f2/boards_setup.cpp deleted file mode 100644 index 5764dd0..0000000 --- a/wirish/stm32f2/boards_setup.cpp +++ /dev/null @@ -1,120 +0,0 @@ -/****************************************************************************** - * 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/stm32f2/boards_setup.cpp - * @author Marti Bolivar <mbolivar@leaflabs.com> - * @brief STM32F2 chip setup. - * - * This file controls how init() behaves on the STM32F2. Be very - * careful when changing anything here. Many of these values depend - * upon each other. - */ - -#include "boards_private.h" - -#include <libmaple/gpio.h> -#include <libmaple/syscfg.h> -#include <libmaple/libmaple_types.h> -#include <wirish/wirish_types.h> -#include <board/board.h> - -// PLL config for 25 MHz external crystal --> 120 MHz SYSCLK, with -// 48 MHz PLL48CK. -#ifndef BOARD_PLL_Q -#define BOARD_PLL_Q 5 -#endif -#ifndef BOARD_PLL_P -#define BOARD_PLL_P 2 -#endif -#ifndef BOARD_PLL_N -#define BOARD_PLL_N 240 -#endif -#ifndef BOARD_PLL_M -#define BOARD_PLL_M 25 -#endif - -static stm32f2_rcc_pll_data pll_data = {BOARD_PLL_Q, - BOARD_PLL_P, - BOARD_PLL_N, - BOARD_PLL_M}; - -namespace wirish { - namespace priv { - // PLL clocked off of HSE, with above configuration data. - __weak rcc_pll_cfg w_board_pll_cfg = {RCC_PLLSRC_HSE, &pll_data}; - - // Global ADC prescaler - // - // On F2, with f_APB2 = 60 MHz, we need f_ADC = f_PCLK2 / 2 to - // get the (maximum) f_ADC = 30 MHz. - __weak adc_prescaler w_adc_pre = ADC_PRE_PCLK2_DIV_2; - - // Conservative ADC sample rate. Goal is error less than 1/4 - // LSB with 50 KOhm input impedance. - // - // On F2, with f_ADC = 30 MHz, error is acceptable assuming an - // internal sample and hold capacitance C_ADC at most 8.8 pF - // (ST doesn't specify the maximum C_ADC, so we had to take a - // guess). See Equation 1 and Table 61 in the F2 datasheet for - // more details. - __weak adc_smp_rate w_adc_smp = ADC_SMPR_144; - - __weak void board_reset_pll(void) { - // Set PLLCFGR to its reset value. - RCC_BASE->PLLCFGR = 0x24003010; // FIXME lose the magic number. - } - - __weak void board_setup_clock_prescalers(void) { - // On F2, with f_SYSCLK = 120 MHz (as determined by - // board_pll_cfg), - // - // f_AHB = f_SYSCLK / 1 = 120 MHz - // f_APB1 = f_AHB / 4 = 30 MHz - // f_APB2 = f_AHB / 2 = 60 MHz - rcc_set_prescaler(RCC_PRESCALER_AHB, RCC_AHB_SYSCLK_DIV_1); - rcc_set_prescaler(RCC_PRESCALER_APB1, RCC_APB1_HCLK_DIV_4); - rcc_set_prescaler(RCC_PRESCALER_APB2, RCC_APB2_HCLK_DIV_2); - } - - __weak void board_setup_gpio(void) { - gpio_init_all(); - } - - __weak void board_setup_usb(void) { - // Nothing to do. - } - - __weak void series_init(void) { - // We need SYSCFG for external interrupts - syscfg_init(); - // Turn on the I/O compensation cell, since we drive the - // GPIOs quickly by default. - syscfg_enable_io_compensation(); - } - - } -} |