Arti Zirk
2de3a91b0a
subrepo: subdir: "libopencm3" merged: "88e91c9a7cce" upstream: origin: "https://github.com/libopencm3/libopencm3.git" branch: "master" commit: "88e91c9a7cce" git-subrepo: version: "0.4.3" origin: "???" commit: "???"
124 lines
4.0 KiB
C
124 lines
4.0 KiB
C
/*
|
|
* This file is part of the libopencm3 project.
|
|
*
|
|
* Copyright (C) 2015 Daniele Lacamera <root at danielinux dot net>
|
|
*
|
|
* 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/>.
|
|
*/
|
|
|
|
#ifndef LM3S_USART_H
|
|
#define LM3S_USART_H
|
|
|
|
#include <libopencm3/cm3/common.h>
|
|
|
|
|
|
|
|
#define USART0_BASE 0x4000C000
|
|
#define USART1_BASE 0x4000D000
|
|
#define USART2_BASE 0x4000E000
|
|
|
|
/* --- Universal Synchronous Asynchronous Receiver Transmitter (USART) */
|
|
#define USART_DR(x) MMIO32((x) + 0x0000)
|
|
#define USART_IR(x) MMIO32((x) + 0x0004)
|
|
#define USART_FR(x) MMIO32((x) + 0x0018)
|
|
#define USART_ILPR(x) MMIO32((x) + 0x0020)
|
|
#define USART_IBRD(x) MMIO32((x) + 0x0024)
|
|
#define USART_FBRD(x) MMIO32((x) + 0x0028)
|
|
#define USART_LCRH(x) MMIO32((x) + 0x002c)
|
|
#define USART_CTL(x) MMIO32((x) + 0x0030)
|
|
#define USART_IFLS(x) MMIO32((x) + 0x0034)
|
|
#define USART_IM(x) MMIO32((x) + 0x0038)
|
|
#define USART_RIS(x) MMIO32((x) + 0x003c)
|
|
#define USART_MIS(x) MMIO32((x) + 0x0040)
|
|
#define USART_IC(x) MMIO32((x) + 0x0044)
|
|
|
|
/* USART Data Register (USART_DR) */
|
|
/* Bits [31:12] - Reserved */
|
|
#define USART_DR_OE (0x01 << 11)
|
|
#define USART_DR_BE (0x01 << 10)
|
|
#define USART_DR_PE (0x01 << 9)
|
|
#define USART_DR_FE (0x01 << 8)
|
|
|
|
/* USART Flags Register (USART_FR) */
|
|
/* Bits [31:8] - Reserved */
|
|
#define USART_FR_TXFE (0x01 << 7)
|
|
#define USART_FR_RXFF (0x01 << 6)
|
|
#define USART_FR_TXFF (0x01 << 5)
|
|
#define USART_FR_RXFE (0x01 << 4)
|
|
#define USART_FR_BUSY (0x01 << 3)
|
|
/* Bits [2:0] - Reserved */
|
|
|
|
/* USART Interrupt Mask Register (USART_IM) */
|
|
/* Bits [31:11] - Reserved */
|
|
#define USART_IM_OE (0x01 << 10)
|
|
#define USART_IM_BE (0x01 << 9)
|
|
#define USART_IM_PE (0x01 << 8)
|
|
#define USART_IM_FE (0x01 << 7)
|
|
#define USART_IM_RT (0x01 << 6)
|
|
#define USART_IM_TX (0x01 << 5)
|
|
#define USART_IM_RX (0x01 << 4)
|
|
/* Bits [3:0] - Reserved */
|
|
|
|
/* USART Interrupt Clear Register (USART_IC) */
|
|
/* Bits [31:11] - Reserved */
|
|
#define USART_IC_OE (0x01 << 10)
|
|
#define USART_IC_BE (0x01 << 9)
|
|
#define USART_IC_PE (0x01 << 8)
|
|
#define USART_IC_FE (0x01 << 7)
|
|
#define USART_IC_RT (0x01 << 6)
|
|
#define USART_IC_TX (0x01 << 5)
|
|
#define USART_IC_RX (0x01 << 4)
|
|
/* Bits [3:0] - Reserved */
|
|
|
|
enum usart_stopbits {
|
|
USART_STOPBITS_1,
|
|
USART_STOPBITS_1_5,
|
|
USART_STOPBITS_2,
|
|
};
|
|
|
|
enum usart_parity {
|
|
USART_PARITY_NONE,
|
|
USART_PARITY_ODD,
|
|
USART_PARITY_EVEN,
|
|
};
|
|
|
|
enum usart_mode {
|
|
USART_MODE_DISABLED,
|
|
USART_MODE_RX,
|
|
USART_MODE_TX,
|
|
USART_MODE_TX_RX,
|
|
};
|
|
|
|
enum usart_flowcontrol {
|
|
USART_FLOWCONTROL_NONE,
|
|
USART_FLOWCONTROL_RTS_CTS,
|
|
};
|
|
|
|
void usart_send(uint32_t usart, uint16_t data);
|
|
uint16_t usart_recv(uint32_t usart);
|
|
bool usart_is_send_ready(uint32_t usart);
|
|
bool usart_is_recv_ready(uint32_t usart);
|
|
void usart_send_blocking(uint32_t usart, uint16_t data);
|
|
uint16_t usart_recv_blocking(uint32_t usart);
|
|
void usart_enable_rx_interrupt(uint32_t usart);
|
|
void usart_disable_rx_interrupt(uint32_t usart);
|
|
void usart_clear_rx_interrupt(uint32_t usart);
|
|
void usart_enable_tx_interrupt(uint32_t usart);
|
|
void usart_disable_tx_interrupt(uint32_t usart);
|
|
void usart_clear_tx_interrupt(uint32_t usart);
|
|
bool usart_get_interrupt_source(uint32_t usart, uint32_t flag);
|
|
|
|
#endif
|
|
|