/** @defgroup usart_defines USART Defines * * @brief Defined Constants and Types for the STM32F0xx USART * * @ingroup STM32F0xx_defines * * @version 1.0.0 * * @date 2 July 2013 * * 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 . */ #ifndef LIBOPENCM3_USART_H #define LIBOPENCM3_USART_H #include /*****************************************************************************/ /* Module definitions */ /*****************************************************************************/ #define USART1 USART1_BASE #define USART2 USART2_BASE #define USART3 USART3_BASE #define USART4 USART4_BASE /*****************************************************************************/ /* Register values */ /*****************************************************************************/ /* USART_CR1 Values ---------------------------------------------------------*/ #define USART_CR1_DEAT_SHIFT 21 #define USART_CR1_DEAT (0x1F << USART_CR1_DEAT_SHIFT) #define USART_CR1_DEAT_VAL(x) ((x) << USART_CR1_DEAT_SHIFT) #define USART_CR1_DEDT_SHIFT 16 #define USART_CR1_DEDT (0x1F << USART_CR1_DEDT_SHIFT) #define USART_CR1_DEDT_VAL(x) ((x) << USART_CR1_DEDT_SHIFT) /* USART_CR2 Values ---------------------------------------------------------*/ #define USART_CR2_ADD_SHIFT 24 #define USART_CR2_ADD (0xFF << USART_CR2_ADD_SHIFT) #define USART_CR2_ADD_VAL(x) ((x) << USART_CR2_ADD_SHIFT) #define USART_CR2_ABRMOD_SHIFT 21 #define USART_CR2_ABRMOD (3 << USART_CR2_ABRMOD_SHIFT) #define USART_CR2_ABRMOD_STARTBIT (0 << USART_CR2_ABRMOD_SHIFT) #define USART_CR2_ABRMOD_FALLTOFALL (1 << USART_CR2_ABRMOD_SHIFT) #define USART_CR2_STOP_SHIFT 12 #define USART_CR2_STOP (3 << USART_CR2_STOP_SHIFT) #define USART_CR2_STOP_1_0BIT (0 << USART_CR2_STOP_SHIFT) #define USART_CR2_STOP_2_0BIT (2 << USART_CR2_STOP_SHIFT) #define USART_CR2_STOP_1_5BIT (3 << USART_CR2_STOP_SHIFT) /* USART_CR3 Values ---------------------------------------------------------*/ #define USART_CR3_SCARCNT_SHIFT 17 #define USART_CR3_SCARCNT (7 << USART_CR3_SCARCNT_SHIFT) #define USART_CR3_SCARCNT_DISABLE (0 << USART_CR3_SCARCNT_SHIFT) #define USART_CR3_SCARCNT_VAL(x) ((x) << USART_CR3_SCARCNT_SHIFT) /* USART_GTPR Values --------------------------------------------------------*/ #define USART_GTPR_GT_SHIFT 8 #define USART_GTPR_GT (0xFF << USART_GTPR_GT_SHIFT) #define USART_GTPR_GT_VAL(x) ((x) << USART_GTPR_GT_SHIFT) #define USART_GTPR_PSC_SHIFT 0 #define USART_GTPR_PSC (0xFF << USART_GTPR_PSC_SHIFT) #define USART_GTPR_PSC_VAL(x) ((x) << USART_GTPR_PSC_SHIFT) /*****************************************************************************/ /* API definitions */ /*****************************************************************************/ #define USART_PARITY (USART_CR1_PCE | USART_CR1_PS) #define USART_PARITY_NONE (0) #define USART_PARITY_EVEN (USART_CR1_PCE) #define USART_PARITY_ODD (USART_CR1_PCE | USART_CR1_PS) #define USART_MODE (USART_CR1_TE | USART_CR1_RE) #define USART_MODE_NONE (0) #define USART_MODE_RX (USART_CR1_RE) #define USART_MODE_TX (USART_CR1_TE) #define USART_MODE_TX_RX (USART_CR1_TE | USART_CR1_RE) #define USART_FLOWCONTROL (USART_CR3_RTSE | USART_CR3_CTSE) #define USART_FLOWCONTROL_NONE (0) #define USART_FLOWCONTROL_RTS (USART_CR3_RTSE) #define USART_FLOWCONTROL_CTS (USART_CR3_CTSE) #define USART_FLOWCONTROL_RTS_CTS (USART_CR3_RTSE | USART_CR3_CTSE) /*****************************************************************************/ /* API Functions */ /*****************************************************************************/ BEGIN_DECLS void usart_set_baudrate(uint32_t usart, uint32_t baud); void usart_set_databits(uint32_t usart, uint32_t bits); void usart_set_stopbits(uint32_t usart, uint32_t stopbits); void usart_set_parity(uint32_t usart, uint32_t parity); void usart_set_mode(uint32_t usart, uint32_t mode); void usart_set_flow_control(uint32_t usart, uint32_t flowcontrol); void usart_enable(uint32_t usart); void usart_disable(uint32_t usart); void usart_send(uint32_t usart, uint16_t data); uint16_t usart_recv(uint32_t usart); void usart_wait_send_ready(uint32_t usart); void usart_wait_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_dma(uint32_t usart); void usart_disable_rx_dma(uint32_t usart); void usart_enable_tx_dma(uint32_t usart); void usart_disable_tx_dma(uint32_t usart); void usart_enable_rx_interrupt(uint32_t usart); void usart_disable_rx_interrupt(uint32_t usart); void usart_enable_tx_interrupt(uint32_t usart); void usart_disable_tx_interrupt(uint32_t usart); void usart_enable_error_interrupt(uint32_t usart); void usart_disable_error_interrupt(uint32_t usart); bool usart_get_flag(uint32_t usart, uint32_t flag); END_DECLS #endif