diff options
Diffstat (limited to 'nuttx/arch/arm/src/stm32/chip/stm32_uart.h')
-rw-r--r-- | nuttx/arch/arm/src/stm32/chip/stm32_uart.h | 229 |
1 files changed, 229 insertions, 0 deletions
diff --git a/nuttx/arch/arm/src/stm32/chip/stm32_uart.h b/nuttx/arch/arm/src/stm32/chip/stm32_uart.h new file mode 100644 index 000000000..d3c1e137e --- /dev/null +++ b/nuttx/arch/arm/src/stm32/chip/stm32_uart.h @@ -0,0 +1,229 @@ +/************************************************************************************ + * arch/arm/src/stm32/chip/stm32_uart.h + * + * Copyright (C) 2009, 2011-2012 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <gnutt@nuttx.org> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ************************************************************************************/ + +#ifndef __ARCH_ARM_STC_STM32_CHIP_STM32_UART_H +#define __ARCH_ARM_STC_STM32_CHIP_STM32_UART_H + +/************************************************************************************ + * Included Files + ************************************************************************************/ + +#include <nuttx/config.h> + +#include "chip.h" + +/************************************************************************************ + * Pre-processor Definitions + ************************************************************************************/ + +/* Register Offsets *****************************************************************/ + +#define STM32_USART_SR_OFFSET 0x0000 /* Status register (32-bits) */ +#define STM32_USART_DR_OFFSET 0x0004 /* Data register (32-bits) */ +#define STM32_USART_BRR_OFFSET 0x0008 /* Baud Rate Register (32-bits) */ +#define STM32_USART_CR1_OFFSET 0x000c /* Control register 1 (32-bits) */ +#define STM32_USART_CR2_OFFSET 0x0010 /* Control register 2 (32-bits) */ +#define STM32_USART_CR3_OFFSET 0x0014 /* Control register 3 (32-bits) */ +#define STM32_USART_GTPR_OFFSET 0x0018 /* Guard time and prescaler register (32-bits) */ + +/* Register Addresses ***************************************************************/ + +#if STM32_NUSART > 0 +# define STM32_USART1_SR (STM32_USART1_BASE+STM32_USART_SR_OFFSET) +# define STM32_USART1_DR (STM32_USART1_BASE+STM32_USART_DR_OFFSET) +# define STM32_USART1_BRR (STM32_USART1_BASE+STM32_USART_BRR_OFFSET) +# define STM32_USART1_CR1 (STM32_USART1_BASE+STM32_USART_CR1_OFFSET) +# define STM32_USART1_CR2 (STM32_USART1_BASE+STM32_USART_CR2_OFFSET) +# define STM32_USART1_CR3 (STM32_USART1_BASE+STM32_USART_CR3_OFFSET) +# define STM32_USART1_GTPR (STM32_USART1_BASE+STM32_USART_GTPR_OFFSET) +#endif + +#if STM32_NUSART > 1 +# define STM32_USART2_SR (STM32_USART2_BASE+STM32_USART_SR_OFFSET) +# define STM32_USART2_DR (STM32_USART2_BASE+STM32_USART_DR_OFFSET) +# define STM32_USART2_BRR (STM32_USART2_BASE+STM32_USART_BRR_OFFSET) +# define STM32_USART2_CR1 (STM32_USART2_BASE+STM32_USART_CR1_OFFSET) +# define STM32_USART2_CR2 (STM32_USART2_BASE+STM32_USART_CR2_OFFSET) +# define STM32_USART2_CR3 (STM32_USART2_BASE+STM32_USART_CR3_OFFSET) +# define STM32_USART2_GTPR (STM32_USART2_BASE+STM32_USART_GTPR_OFFSET) +#endif + +#if STM32_NUSART > 2 +# define STM32_USART3_SR (STM32_USART3_BASE+STM32_USART_SR_OFFSET) +# define STM32_USART3_DR (STM32_USART3_BASE+STM32_USART_DR_OFFSET) +# define STM32_USART3_BRR (STM32_USART3_BASE+STM32_USART_BRR_OFFSET) +# define STM32_USART3_CR1 (STM32_USART3_BASE+STM32_USART_CR1_OFFSET) +# define STM32_USART3_CR2 (STM32_USART3_BASE+STM32_USART_CR2_OFFSET) +# define STM32_USART3_CR3 (STM32_USART3_BASE+STM32_USART_CR3_OFFSET) +# define STM32_USART3_GTPR (STM32_USART3_BASE+STM32_USART_GTPR_OFFSET) +#endif + +#if STM32_NUSART > 3 +# define STM32_UART4_SR (STM32_UART4_BASE+STM32_USART_SR_OFFSET) +# define STM32_UART4_DR (STM32_UART4_BASE+STM32_USART_DR_OFFSET) +# define STM32_UART4_BRR (STM32_UART4_BASE+STM32_USART_BRR_OFFSET) +# define STM32_UART4_CR1 (STM32_UART4_BASE+STM32_USART_CR1_OFFSET) +# define STM32_UART4_CR2 (STM32_UART4_BASE+STM32_USART_CR2_OFFSET) +# define STM32_UART4_CR3 (STM32_UART4_BASE+STM32_USART_CR3_OFFSET) +#endif + +#if STM32_NUSART > 4 +# define STM32_UART5_SR (STM32_UART5_BASE+STM32_USART_SR_OFFSET) +# define STM32_UART5_DR (STM32_UART5_BASE+STM32_USART_DR_OFFSET) +# define STM32_UART5_BRR (STM32_UART5_BASE+STM32_USART_BRR_OFFSET) +# define STM32_UART5_CR1 (STM32_UART5_BASE+STM32_USART_CR1_OFFSET) +# define STM32_UART5_CR2 (STM32_UART5_BASE+STM32_USART_CR2_OFFSET) +# define STM32_UART5_CR3 (STM32_UART5_BASE+STM32_USART_CR3_OFFSET) +#endif + +#if STM32_NUSART > 5 +# define STM32_USART6_SR (STM32_USART6_BASE+STM32_USART_SR_OFFSET) +# define STM32_USART6_DR (STM32_USART6_BASE+STM32_USART_DR_OFFSET) +# define STM32_USART6_BRR (STM32_USART6_BASE+STM32_USART_BRR_OFFSET) +# define STM32_USART6_CR1 (STM32_USART6_BASE+STM32_USART_CR1_OFFSET) +# define STM32_USART6_CR2 (STM32_USART6_BASE+STM32_USART_CR2_OFFSET) +# define STM32_USART6_CR3 (STM32_USART6_BASE+STM32_USART_CR3_OFFSET) +# define STM32_USART6_GTPR (STM32_USART6_BASE+STM32_USART_GTPR_OFFSET) +#endif + +/* Register Bitfield Definitions ****************************************************/ + +/* Status register */ + +#define USART_SR_PE (1 << 0) /* Bit 0: Parity Error */ +#define USART_SR_FE (1 << 1) /* Bit 1: Framing Error */ +#define USART_SR_NE (1 << 2) /* Bit 2: Noise Error Flag */ +#define USART_SR_ORE (1 << 3) /* Bit 3: OverRun Error */ +#define USART_SR_IDLE (1 << 4) /* Bit 4: IDLE line detected */ +#define USART_SR_RXNE (1 << 5) /* Bit 5: Read Data Register Not Empty */ +#define USART_SR_TC (1 << 6) /* Bit 6: Transmission Complete */ +#define USART_SR_TXE (1 << 7) /* Bit 7: Transmit Data Register Empty */ +#define USART_SR_LBD (1 << 8) /* Bit 8: LIN Break Detection Flag */ +#define USART_SR_CTS (1 << 9) /* Bit 9: CTS Flag */ + +#define USART_SR_ALLBITS (0x03ff) +#define USART_SR_CLRBITS (USART_SR_CTS|USART_SR_LBD) /* Cleared by SW write to SR */ + +/* Data register */ + +#define USART_DR_SHIFT (0) /* Bits 8:0: Data value */ +#define USART_DR_MASK (0xff << USART_DR_SHIFT) + +/* Baud Rate Register */ + +#define USART_BRR_FRAC_SHIFT (0) /* Bits 3-0: fraction of USARTDIV */ +#define USART_BRR_FRAC_MASK (0x0f << USART_BRR_FRAC_SHIFT) +#define USART_BRR_MANT_SHIFT (4) /* Bits 15-4: mantissa of USARTDIV */ +#define USART_BRR_MANT_MASK (0x0fff << USART_BRR_MANT_SHIFT) + +/* Control register 1 */ + +#define USART_CR1_SBK (1 << 0) /* Bit 0: Send Break */ +#define USART_CR1_RWU (1 << 1) /* Bit 1: Receiver wakeup */ +#define USART_CR1_RE (1 << 2) /* Bit 2: Receiver Enable */ +#define USART_CR1_TE (1 << 3) /* Bit 3: Transmitter Enable */ +#define USART_CR1_IDLEIE (1 << 4) /* Bit 4: IDLE Interrupt Enable */ +#define USART_CR1_RXNEIE (1 << 5) /* Bit 5: RXNE Interrupt Enable */ +#define USART_CR1_TCIE (1 << 6) /* Bit 6: Transmission Complete Interrupt Enable */ +#define USART_CR1_TXEIE (1 << 7) /* Bit 7: TXE Interrupt Enable */ +#define USART_CR1_PEIE (1 << 8) /* Bit 8: PE Interrupt Enable */ +#define USART_CR1_PS (1 << 9) /* Bit 9: Parity Selection */ +#define USART_CR1_PCE (1 << 10) /* Bit 10: Parity Control Enable */ +#define USART_CR1_WAKE (1 << 11) /* Bit 11: Wakeup method */ +#define USART_CR1_M (1 << 12) /* Bit 12: word length */ +#define USART_CR1_UE (1 << 13) /* Bit 13: USART Enable */ + +#if defined(CONFIG_STM32_STM32F20XX) || defined(CONFIG_STM32_STM32F40XX) +# define USART_CR1_OVER8 (1 << 15) /* Bit 15: Oversampling mode */ +#endif + +#define USART_CR1_ALLINTS (USART_CR1_IDLEIE|USART_CR1_RXNEIE|USART_CR1_TCIE|USART_CR1_PEIE) + +/* Control register 2 */ + +#define USART_CR2_ADD_SHIFT (0) /* Bits 3-0: Address of the USART node */ +#define USART_CR2_ADD_MASK (0x0f << USART_CR2_ADD_SHIFT) +#define USART_CR2_LBDL (1 << 5) /* Bit 5: LIN Break Detection Length */ +#define USART_CR2_LBDIE (1 << 6) /* Bit 6: LIN Break Detection Interrupt Enable */ +#define USART_CR2_LBCL (1 << 8) /* Bit 8: Last Bit Clock pulse */ +#define USART_CR2_CPHA (1 << 9) /* Bit 9: Clock Phase */ +#define USART_CR2_CPOL (1 << 10) /* Bit 10: Clock Polarity */ +#define USART_CR2_CLKEN (1 << 11) /* Bit 11: Clock Enable */ +#define USART_CR2_STOP_SHIFT (12) /* Bits 13-12: STOP bits */ +#define USART_CR2_STOP_MASK (3 << USART_CR2_STOP_SHIFT) +# define USART_CR2_STOP1 (0 << USART_CR2_STOP_SHIFT) /* 00: 1 Stop bit */ +# define USART_CR2_STOP0p5 (1 << USART_CR2_STOP_SHIFT) /* 01: 0.5 Stop bit */ +# define USART_CR2_STOP2 (2 << USART_CR2_STOP_SHIFT) /* 10: 2 Stop bits */ +# define USART_CR2_STOP1p5 (3 << USART_CR2_STOP_SHIFT) /* 11: 1.5 Stop bit */ +#define USART_CR2_LINEN (1 << 14) /* Bit 14: LIN mode enable */ + +/* Control register 3 */ + +#define USART_CR3_EIE (1 << 0) /* Bit 0: Error Interrupt Enable */ +#define USART_CR3_IREN (1 << 1) /* Bit 1: IrDA mode Enable */ +#define USART_CR3_IRLP (1 << 2) /* Bit 2: IrDA Low-Power */ +#define USART_CR3_HDSEL (1 << 3) /* Bit 3: Half-Duplex Selection */ +#define USART_CR3_NACK (1 << 4) /* Bit 4: Smartcard NACK enable */ +#define USART_CR3_SCEN (1 << 5) /* Bit 5: Smartcard mode enable */ +#define USART_CR3_DMAR (1 << 6) /* Bit 6: DMA Enable Receiver */ +#define USART_CR3_DMAT (1 << 7) /* Bit 7: DMA Enable Transmitter */ +#define USART_CR3_RTSE (1 << 8) /* Bit 8: RTS Enable */ +#define USART_CR3_CTSE (1 << 9) /* Bit 9: CTS Enable */ +#define USART_CR3_CTSIE (1 << 10) /* Bit 10: CTS Interrupt Enable */ + +#if defined(CONFIG_STM32_STM32F20XX) || defined(CONFIG_STM32_STM32F40XX) +# define USART_CR1_ONEBIT (1 << 11) /* Bit 11: One sample bit method enable */ +#endif + +/* Guard time and prescaler register */ + +#define USART_GTPR_PSC_SHIFT (0) /* Bits 0-7: Prescaler value */ +#define USART_GTPR_PSC_MASK (0xff << USART_GTPR_PSC_SHIFT) +#define USART_GTPR_GT_SHIFT (8) /* Bits 8-15: Guard time value */ +#define USART_GTPR_GT_MASK (0xff << USART_GTPR_GT_SHIFT) + +/************************************************************************************ + * Public Types + ************************************************************************************/ + +/************************************************************************************ + * Public Data + ************************************************************************************/ + +/************************************************************************************ + * Public Functions + ************************************************************************************/ + +#endif /* __ARCH_ARM_STC_STM32_CHIP_STM32_UART_H */ |