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Add initial framework for USART support. So far only some #defines.

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This commit is contained in:
Uwe Hermann 2009-07-22 14:02:21 +02:00
parent 574f77f6df
commit 6db6d5b49c
4 changed files with 110 additions and 1 deletions
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1
include/libopenstm32.h
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@ -24,5 +24,6 @@
#include <libopenstm32/memorymap.h>
#include <libopenstm32/rcc.h>
#include <libopenstm32/gpio.h>
#include <libopenstm32/usart.h>
#endif

85
include/libopenstm32/usart.h Normal file
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@ -0,0 +1,85 @@
/*
* This file is part of the libopenstm32 project.
*
* 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/>.
*/
#ifndef LIBOPENSTM32_USART_H
#define LIBOPENSTM32_USART_H
#include <libopenstm32.h>
/* --- USART registers ----------------------------------------------------- */
#define USART_SR MMIO32(USART_BASE + 0x00)
#define USART_DR MMIO32(USART_BASE + 0x04)
#define USART_BRR MMIO32(USART_BASE + 0x08)
#define USART_CR1 MMIO32(USART_BASE + 0x0c)
#define USART_CR2 MMIO32(USART_BASE + 0x10)
#define USART_CR3 MMIO32(USART_BASE + 0x14)
#define USART_GTPR MMIO32(USART_BASE + 0x18)
/* --- RCC_SR values ------------------------------------------------------- */
#define SR_CTS (1 << 9)
#define SR_LBD (1 << 8)
#define SR_TXE (1 << 7)
#define SR_TC (1 << 6)
#define SR_RXNE (1 << 5)
#define SR_IDLE (1 << 4)
#define SR_ORE (1 << 3)
#define SR_NE (1 << 2)
#define SR_FE (1 << 1)
#define SR_PE (1 << 0)
/* --- RCC_DR values ------------------------------------------------------- */
/* DR[8:0]: Data value */
/* --- RCC_BRR values ------------------------------------------------------ */
/* TODO */
/* --- RCC_CR1 values ------------------------------------------------------ */
#define CR1_UE (1 << 13)
#define CR1_M (1 << 12)
#define CR1_WAKE (1 << 11)
#define CR1_PCE (1 << 10)
#define CR1_PS (1 << 9)
#define CR1_PEIE (1 << 8)
#define CR1_TXEIE (1 << 7)
#define CR1_TCIE (1 << 6)
#define CR1_RXNEIE (1 << 5)
#define CR1_IDLEIE (1 << 4)
#define CR1_TE (1 << 3)
#define CR1_RE (1 << 2)
#define CR1_RWU (1 << 1)
#define CR1_SBK (1 << 0)
/* --- RCC_CR2 values ------------------------------------------------------ */
/* TODO */
/* --- RCC_CR3 values ------------------------------------------------------ */
/* TODO */
/* --- RCC_GTPR values ----------------------------------------------------- */
/* TODO */
#endif

2
lib/Makefile
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@ -27,7 +27,7 @@ CFLAGS = -Os -g -Wall -Wextra -I../include -fno-common \
-mcpu=cortex-m3 -mthumb -Wstrict-prototypes
# ARFLAGS = rcsv
ARFLAGS = rcs
OBJS = gpio.o rcc.o
OBJS = rcc.o gpio.o usart.o
# Be silent per default, but 'make V=1' will show all compiler calls.
ifneq ($(V),1)

23
lib/usart.c Normal file
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@ -0,0 +1,23 @@
/*
* This file is part of the libopenstm32 project.
*
* 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>
/* TODO */