EMTime/libopencm3
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

stm32: Clock Recovery System is a common peripheral.

Browse Source 
Pull it out of the F0 directory ready to be used by other devices with this
peripheral.
This commit is contained in:
Karl Palsson
2015-10-03 18:00:13 +00:00
parent c097343634
commit d67aec1cc8
4 changed files with 10 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
lib/stm32/f0/Makefile
View File

@@ -42,7 +42,8 @@ OBJS += gpio_common_all.o gpio_common_f0234.o crc_common_all.o \
pwr_common_all.o iwdg_common_all.o rtc_common_l1f024.o \
dma_common_l1f013.o exti_common_all.o spi_common_all.o \
spi_common_f03.o flash_common_f01.o dac_common_all.o \
timer_common_all.o rcc_common_all.o crs.o
timer_common_all.o rcc_common_all.o
OBJS += crs_common_all.o
OBJS += usb.o usb_control.o usb_standard.o
OBJS += st_usbfs_core.o st_usbfs_v2.o

47
lib/stm32/f0/crs.c
View File

@@ -1,47 +0,0 @@
/** @defgroup crs_file CRS
*
* @ingroup STM32F0xx
*
* @brief <b>libopencm3 STM32F0xx Clock Recovery Subsystem</b>
*
* @version 1.0.0
*
* @date 5 Feb 2014
*
* LGPL License Terms @ref lgpl_license
*/
/*
* This file is part of the libopencm3 project.
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include <libopencm3/stm32/crs.h>
#include <libopencm3/stm32/rcc.h>
/**
* This function enables autonatic trimming of internal RC oscillator by USB SOF
* frames
*/
void crs_autotrim_usb_enable(void)
{
rcc_periph_clock_enable(RCC_CRS);
CRS_CFGR &= ~CRS_CFGR_SYNCSRC;
CRS_CFGR |= CRS_CFGR_SYNCSRC_USB_SOF;
CRS_CR |= CRS_CR_AUTOTRIMEN;
CRS_CR |= CRS_CR_CEN;
}