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57 lines
1.8 KiB
C
57 lines
1.8 KiB
C
/*---------------------------------------------------------------------------*\
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FILE........: debugblinky.c
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AUTHOR......: David Rowe
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DATE CREATED: 12 August 2014
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Configures GPIO pins used for debug blinkies
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\*---------------------------------------------------------------------------*/
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/*
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Copyright (C) 2014 David Rowe
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All rights reserved.
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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 Lesser General Public License version 2.1, as
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published by the Free Software Foundation. This program is
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distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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License for more details.
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You should have received a copy of the GNU Lesser 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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#include "stm32f4xx.h"
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void init_debug_blinky(void) {
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GPIO_InitTypeDef GPIO_InitStruct;
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/* PE0-3 used to indicate activity, PE4-5 for SM2000 +12V rail switching */
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RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOE, ENABLE);
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GPIO_InitStruct.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_2 | GPIO_Pin_3 | GPIO_Pin_4 | GPIO_Pin_5;
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GPIO_InitStruct.GPIO_Mode = GPIO_Mode_OUT;
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GPIO_InitStruct.GPIO_Speed = GPIO_Speed_50MHz;
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GPIO_InitStruct.GPIO_OType = GPIO_OType_PP;
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GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_NOPULL;
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GPIO_Init(GPIOE, &GPIO_InitStruct);
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}
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/* SM2000: 0 for +12V RX power, 1 for +12V TX power */
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void txrx_12V(int state) {
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if (state) {
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GPIOE->ODR &= ~(1 << 5); /* +12VRXENB off */
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GPIOE->ODR |= (1 << 4); /* +12VTXENB on */
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}
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else {
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GPIOE->ODR &= ~(1 << 4); /* +12VTXENB off */
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GPIOE->ODR |= (1 << 5); /* +12VRXENB on */
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}
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}
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