mirror of
https://github.com/eddyem/stm32samples.git
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75 lines
2.5 KiB
C
75 lines
2.5 KiB
C
/*
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* hw_init.h
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*
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* Copyright 2015 Edward V. Emelianoff <eddy@sao.ru, edward.emelianoff@gmail.com>
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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 2 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, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*/
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#pragma once
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#ifndef __HW_INIT_H__
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#define __HW_INIT_H__
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#include "main.h"
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/*
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* USB interface
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*/
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// USB_DICS (disconnect) - PC11
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#define USB_DISC_PIN GPIO11
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#define USB_DISC_PORT GPIOC
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// USB_POWER (high level when USB connected to PC)
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#define USB_POWER_PIN GPIO10
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#define USB_POWER_PORT GPIOC
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// change signal level on USB diconnect pin
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#define usb_disc_high() gpio_set(USB_DISC_PORT, USB_DISC_PIN)
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#define usb_disc_low() gpio_clear(USB_DISC_PORT, USB_DISC_PIN)
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// in case of n-channel FET on 1.5k pull-up change on/off disconnect means low level
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// in case of pnp bipolar transistor or p-channel FET on 1.5k pull-up disconnect means high level
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#define usb_disconnect() usb_disc_high()
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#define usb_connect() usb_disc_low()
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void GPIO_init();
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void SysTick_init();
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/* here are functions & macros for changing command pins state:
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* SET_DC() - set D/~C pin high (data)
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* CLEAR_DC() - clear D/~C (command)
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* CHIP_EN() - clear ~SCE
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* CHIP_DIS() - set ~SCE (disable chip)
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* CLEAR_RST() - set 1 on RST pin
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* LCD_RST() - set 0 on RST pin
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*/
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/* pins:
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* DC: PB6
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* SCE: PB7
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* RST: PB8
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*/
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#define DC_PORT GPIOB
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#define SCE_PORT GPIOB
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#define RST_PORT GPIOB
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#define DC_PIN GPIO6
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#define SCE_PIN GPIO7
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#define RST_PIN GPIO8
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#define SET_DC() do{GPIO_BSRR(DC_PORT) = DC_PIN;}while(0)
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#define CLEAR_DC() do{GPIO_BSRR(DC_PORT) = DC_PIN << 16;}while(0)
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#define CHIP_EN() do{GPIO_BSRR(SCE_PORT) = SCE_PIN << 16;}while(0)
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#define CHIP_DIS() do{GPIO_BSRR(SCE_PORT) = SCE_PIN;}while(0)
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#define CLEAR_RST() do{GPIO_BSRR(RST_PORT) = RST_PIN;}while(0)
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#define LCD_RST() do{GPIO_BSRR(RST_PORT) = RST_PIN << 16;}while(0)
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#endif // __HW_INIT_H__
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