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Add slightly modified rcc.c file, contributed by Federico Ruiz-Ugalde.

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This commit is contained in:
Uwe Hermann 2009-07-20 15:29:43 +02:00
parent 07b6ca3a90
commit 50b1b50676
2 changed files with 213 additions and 1 deletions
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2
lib/Makefile
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@ -27,7 +27,7 @@ CFLAGS = -Os -g -Wall -Wextra -I../include -fno-common \
-mcpu=cortex-m3 -mthumb -mcpu=cortex-m3 -mthumb
# ARFLAGS = rcsv # ARFLAGS = rcsv
ARFLAGS = rcs ARFLAGS = rcs
OBJS = gpio.o OBJS = gpio.o rcc.o
# Be silent per default, but 'make V=1' will show all compiler calls. # Be silent per default, but 'make V=1' will show all compiler calls.
ifneq ($(V),1) ifneq ($(V),1)

212
lib/rcc.c Normal file
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@ -0,0 +1,212 @@
/*
* This file is part of the libopenstm32 project.
*
* Copyright (C) 2009 Federico Ruiz-Ugalde <memeruiz at gmail dot com>
* Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "libopenstm32.h"
void rcc_osc_ready_int_clear(osc_t osc)
{
switch (osc) {
case PLL:
RCC_CR |= PLLRDYC;
break;
case HSE:
RCC_CR |= HSERDYC;
break;
case HSI:
RCC_CR |= HSIRDYC;
break;
case LSE:
RCC_CIR |= LSERDYC;
break;
case LSI:
RCC_CIR |= LSIRDYC;
break;
}
}
void rcc_osc_ready_int_enable(osc_t osc)
{
switch (osc) {
case PLL:
RCC_CR |= PLLRDYIE;
break;
case HSE:
RCC_CR |= HSERDYIE;
break;
case HSI:
RCC_CR |= HSIRDYIE;
break;
case LSE:
RCC_CIR |= LSERDYIE;
break;
case LSI:
RCC_CIR |= LSIRDYIE;
break;
}
}
void rcc_osc_ready_int_disable(osc_t osc)
{
switch (osc) {
case PLL:
RCC_CR &= ~PLLRDYIE;
break;
case HSE:
RCC_CR &= ~HSERDYIE;
break;
case HSI:
RCC_CR &= ~HSIRDYIE;
break;
case LSE:
RCC_CIR &= ~LSERDYIE;
break;
case LSI:
RCC_CIR &= ~LSIRDYIE;
break;
}
}
int rcc_osc_ready_int_flag(osc_t osc)
{
switch (osc) {
case PLL:
return ((RCC_CR & PLLRDYF) != 0);
break;
case HSE:
return ((RCC_CR & HSERDYF) != 0);
break;
case HSI:
return ((RCC_CR & HSIRDYF) != 0);
break;
case LSE:
return ((RCC_CIR & LSERDYF) != 0);
break;
case LSI:
return ((RCC_CIR & LSIRDYF) != 0);
break;
}
}
void rcc_css_int_clear(void)
{
RCC_CIR |= CSSC;
}
int rcc_css_int_flag(void)
{
return ((RCC_CIR & CSSF) != 0);
}
int rcc_osc_ready(osc_t osc)
{
switch (osc) {
case PLL:
return ((RCC_CR & PLLRDY) != 0);
break;
case HSE:
return ((RCC_CR & HSERDY) != 0);
break;
case HSI:
return ((RCC_CR & HSIRDY) != 0);
break;
case LSE:
return ((RCC_BDCR & LSERDY) != 0);
break;
case LSI:
return ((RCC_CSR & LSIRDY) != 0);
break;
}
}
void rcc_osc_on(osc_t osc)
{
switch (osc) {
case PLL:
RCC_CR |= PLLON;
break;
case HSE:
RCC_CR |= HSEON;
break;
case HSI:
RCC_CR |= HSION;
break;
case LSE:
RCC_BDCR |= LSEON;
break;
case LSI:
RCC_CSR |= LSION;
break;
}
}
void rcc_osc_off(osc_t osc)
{
switch (osc) {
case PLL:
RCC_CR &= ~PLLON;
break;
case HSE:
RCC_CR &= ~HSEON;
break;
case HSI:
RCC_CR &= ~HSION;
break;
case LSE:
RCC_BDCR &= ~LSEON;
break;
case LSI:
RCC_CSR &= ~LSION;
break;
}
}
void rcc_css_enable(void)
{
RCC_CR |= CSSON;
}
void rcc_css_disable(void)
{
RCC_CR &= ~CSSON;
}
void rcc_osc_bypass_enable(osc_t osc)
{
switch (osc) {
case HSE:
RCC_CR |= HSEBYP;
break;
case LSE:
RCC_BDCR |= LSEBYP;
break;
}
}
void rcc_osc_bypass_disable(osc_t osc)
{
switch (osc) {
case HSE:
RCC_CR &= ~HSEBYP;
break;
case LSE:
RCC_BDCR &= ~LSEBYP;
break;
}
}