b20d0ff1fb
Just small pieces at a time to make it easy to see what's happening. Taking definitions currently implemented in both f0/f3 headers and making combined, documented versions in the -v2 header.
81 lines
2.2 KiB
C
81 lines
2.2 KiB
C
/** @defgroup usart_defines USART Defines
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*
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* @brief <b>Defined Constants and Types for the STM32F3xx USART</b>
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*
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* @ingroup STM32F3xx_defines
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*
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* @version 1.0.0
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*
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* @date 5 December 2012
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*
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* LGPL License Terms @ref lgpl_license
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*/
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/*
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* This file is part of the libopencm3 project.
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*
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* This library 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 as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef LIBOPENCM3_USART_H
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#define LIBOPENCM3_USART_H
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#include <libopencm3/stm32/common/usart_common_all.h>
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#include <libopencm3/stm32/common/usart_common_v2.h>
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/** @defgroup usart_reg_base USART register base addresses
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* @ingroup STM32F_usart_defines
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* Holds all the U(S)ART peripherals supported.
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* @{
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*/
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#define USART1 USART1_BASE
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#define USART2 USART2_BASE
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#define USART3 USART3_BASE
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#define UART4 UART4_BASE
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#define UART5 UART5_BASE
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/**@}*/
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/* --- USART_CR3 values ---------------------------------------------------- */
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/* SCARCNT[2:0]: Smartcard auto-retry count */
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#define USART_CR3_SCARCNT_OFF (0x0 << 17)
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/* 0x1 to 0x7: number of automatic retransmission attempts */
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/* --- USART_BRR values ---------------------------------------------------- */
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/* DIV_Mantissa[11:0]: mantissa of USARTDIV */
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#define USART_BRR_DIV_MANTISSA_MASK (0xFFF << 4)
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/* DIV_Fraction[3:0]: fraction of USARTDIV */
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#define USART_BRR_DIV_FRACTION_MASK 0xF
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/* --- USART_GTPR values --------------------------------------------------- */
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/* GT[7:0]: Guard time value */
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/* Note: N/A on UART4 & UART5 */
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#define USART_GTPR_GT_MASK (0xFF << 8)
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/* PSC[7:0]: Prescaler value */
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/* Note: N/A on UART4/5 */
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#define USART_GTPR_PSC_MASK 0xFF
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#endif
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