More serial driver stuff for AVR
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3694 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo
parent
de50ea79f9
commit
23f58da312
@ -45,6 +45,7 @@
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#include <arch/irq.h>
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#include <arch/board/board.h>
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#include <avr/io.h>
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#include "up_arch.h"
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#include "up_internal.h"
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@ -55,25 +56,13 @@
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* Private Definitions
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******************************************************************************/
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/* Select USART parameters for the selected console -- there is only USART1 */
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#if defined(CONFIG_USART1_SERIAL_CONSOLE)
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# define AVR_CONSOLE_BASE AVR_USART1_BASE
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# define AVR_CONSOLE_BAUD CONFIG_USART1_BAUD
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# define AVR_CONSOLE_BITS CONFIG_USART1_BITS
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# define AVR_CONSOLE_PARITY CONFIG_USART1_PARITY
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# define AVR_CONSOLE_2STOP CONFIG_USART1_2STOP
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#else
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# error "No CONFIG_USARTn_SERIAL_CONSOLE Setting"
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#endif
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/* Baud rate settings for normal and double speed settings */
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#define AVR_NORMAL_UBRR1 \
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(((BOARD_CPU_CLOCK / 16) + (CONFIG_USART1_BAUD / 2)) / (CONFIG_USART1_BAUD)) - 1)
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((((BOARD_CPU_CLOCK / 16) + (CONFIG_USART1_BAUD / 2)) / (CONFIG_USART1_BAUD)) - 1)
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#define AVR_DBLSPEED_UBRR1 \
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(((BOARD_CPU_CLOCK / 8) + (CONFIG_USART1_BAUD / 2)) / (CONFIG_USART1_BAUD)) - 1)
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((((BOARD_CPU_CLOCK / 8) + (CONFIG_USART1_BAUD / 2)) / (CONFIG_USART1_BAUD)) - 1)
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/* Select normal or double speed baud settings. This is a trade-off between the
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* sampling rate and the accuracy of the divisor for high baud rates.
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@ -89,34 +78,34 @@
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* AVR_DBLSPEED_UBRR1 = 104 (rounded), actual baud = 9615
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*/
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#undef HAVE_DOUBLE_SPEED
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#undef UART1_DOUBLE_SPEED
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#if BOARD_CPU_CLOCK <= 4000000
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# if CONFIG_USART1_BAUD <= 9600
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# define AVR_UBRR1 AVR_NORMAL_UBRR1
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# else
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# define AVR_UBRR1 AVR_DBLSPEED_UBRR1
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# define HAVE_DOUBLE_SPEED 1
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# define UART1_DOUBLE_SPEED 1
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# endif
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#elif BOARD_CPU_CLOCK <= 8000000
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# if CONFIG_USART1_BAUD <= 19200
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# define AVR_UBRR1 AVR_NORMAL_UBRR1
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# else
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# define AVR_UBRR1 AVR_DBLSPEED_UBRR1
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# define HAVE_DOUBLE_SPEED 1
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# define UART1_DOUBLE_SPEED 1
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# endif
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#elif BOARD_CPU_CLOCK <= 12000000
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# if CONFIG_USART1_BAUD <= 28800
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# define AVR_UBRR1 AVR_NORMAL_UBRR1
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# else
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# define AVR_UBRR1 AVR_DBLSPEED_UBRR1
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# define HAVE_DOUBLE_SPEED 1
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# define UART1_DOUBLE_SPEED 1
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# endif
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#else
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# if CONFIG_USART1_BAUD <= 38400
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# define AVR_UBRR1 AVR_NORMAL_UBRR1
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# else
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# define AVR_UBRR1 AVR_DBLSPEED_UBRR1
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# define HAVE_DOUBLE_SPEED 1
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# define UART1_DOUBLE_SPEED 1
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# endif
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#endif
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@ -155,7 +144,14 @@
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#ifdef HAVE_USART_DEVICE
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void usart1_reset(void)
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{
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# warning "Missing Logic"
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UCSR1A = 0;
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UCSR1B = 0;
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UCSR1C = 0;
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DDRD &= ~(1 << 3);
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PORTD &= ~(1 << 2);
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UBRR1 = 0;
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}
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#endif
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@ -170,7 +166,62 @@ void usart1_reset(void)
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#ifdef HAVE_USART_DEVICE
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void usart1_configure(void)
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{
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# warning "Missing Logic"
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uint8_t ucsr1b;
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uint8_t ucsr1c;
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/* Select normal or double speed. */
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#ifdef UART1_DOUBLE_SPEED
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UCSR1A = (1 << U2X1);
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#else
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UCSR1A = 0;
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#endif
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/* Select baud, parity, nubmer of bits, stop bits, etc. */
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ucsr1b = ((1 << TXEN1) | (1 << RXEN1));
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ucsr1c = 0;
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/* Select parity */
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#if CONFIG_USART1_PARITY == 1
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ucsr1c |= (UPM11 | UPM10); /* Odd parity */
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#else
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ucsr1c |= UPM11; /* Even parity */
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#endif
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/* 1 or 2 stop bits */
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#if defined(CONFIG_USART1_2STOP) && CONFIG_USART1_2STOP > 0
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ucsr1c |= USBS1; /* Two stop bits */
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#endif
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/* Word size */
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#if CONFIG_USART1_BITS == 5
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#elif CONFIG_USART1_BITS == 6
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ucsr1c |= UCSZ10;
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#elif CONFIG_USART1_BITS == 7
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ucsr1c |= UCSZ11;
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#elif CONFIG_USART1_BITS == 8
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ucsr1c |= (UCSZ10 | UCSZ11);
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#elif CONFIG_USART1_BITS == 9
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ucsr1c |= (UCSZ10 | UCSZ11);
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ucsr1b |= UCSZ12;
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#else
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# error "Unsupported word size"
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#endif
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UCSR1B = ucsr1b;
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UCSR1C = ucsr1c;
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/* Configure pin */
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DDRD |= (1 << 3);
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PORTD |= (1 << 2);
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/* Set the baud rate divisor */
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UBRR1 = AVR_UBRR1;
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}
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#endif
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@ -202,7 +253,8 @@ void up_consoleinit(void)
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void up_lowputc(char ch)
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{
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#ifdef HAVE_SERIAL_CONSOLE
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# warning "Missing Logic"
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while ((UCSR1A & (1 << UDRE1)) == 0);
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UDR1 = ch;
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#endif
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}
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@ -52,6 +52,7 @@
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#include <nuttx/irq.h>
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#include <nuttx/arch.h>
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#include <nuttx/serial.h>
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#include <avr/io.h>
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#include <arch/board/board.h>
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@ -346,23 +347,16 @@ static int usart1_ioctl(struct file *filep, int cmd, unsigned long arg)
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static int usart1_receive(struct uart_dev_s *dev, uint32_t *status)
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{
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/* Get the Rx byte. The USART Rx interrupt flag is cleared by side effect
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* when reading the received character.
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*/
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# warning "Missing logic"
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/* Return status information */
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if (status)
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{
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# warning "Missing logic"
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*status = (uint32_t)UCSR1A;
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}
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/* Then return the actual received byte */
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# warning "Missing logic"
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return 0;
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return UDR1;
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}
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/****************************************************************************
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@ -401,8 +395,7 @@ static void usart1_rxint(struct uart_dev_s *dev, bool enable)
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static bool usart1_rxavailable(struct uart_dev_s *dev)
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{
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# warning "Missing logic"
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return 0;
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return (UCSR1A & (1 << RXC1)) != 0;
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}
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/****************************************************************************
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@ -415,8 +408,7 @@ static bool usart1_rxavailable(struct uart_dev_s *dev)
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static void usart1_send(struct uart_dev_s *dev, int ch)
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{
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# warning "Missing logic"
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return 0;
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UDR1 = ch;
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}
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/****************************************************************************
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@ -465,8 +457,7 @@ static void usart1_txint(struct uart_dev_s *dev, bool enable)
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static bool usart1_txready(struct uart_dev_s *dev)
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{
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# warning "Missing logic"
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return 0;
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return (UCSR1A & (1 << UDRE1)) != 0;
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}
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/****************************************************************************
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@ -45,6 +45,7 @@
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#include <arch/irq.h>
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#include <arch/board/board.h>
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#include <avr/io.h>
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#include "up_arch.h"
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#include "up_internal.h"
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@ -54,22 +55,110 @@
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* Private Definitions
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******************************************************************************/
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/* Select USART parameters for the selected console */
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/* USART0 Baud rate settings for normal and double speed settings */
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#if defined(CONFIG_USART0_SERIAL_CONSOLE)
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# define AVR__CONSOLE_BASE AVR__USART0_BASE
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# define AVR__CONSOLE_BAUD CONFIG_USART0_BAUD
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# define AVR__CONSOLE_BITS CONFIG_USART0_BITS
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# define AVR__CONSOLE_PARITY CONFIG_USART0_PARITY
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# define AVR__CONSOLE_2STOP CONFIG_USART0_2STOP
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#elif defined(CONFIG_USART1_SERIAL_CONSOLE)
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# define AVR__CONSOLE_BASE AVR__USART1_BASE
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# define AVR__CONSOLE_BAUD CONFIG_USART1_BAUD
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# define AVR__CONSOLE_BITS CONFIG_USART1_BITS
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# define AVR__CONSOLE_PARITY CONFIG_USART1_PARITY
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# define AVR__CONSOLE_2STOP CONFIG_USART1_2STOP
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#define AVR_NORMAL_UBRR0 \
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((((BOARD_CPU_CLOCK / 16) + (CONFIG_USART0_BAUD / 2)) / (CONFIG_USART0_BAUD)) - 1)
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#define AVR_DBLSPEED_UBRR0 \
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((((BOARD_CPU_CLOCK / 8) + (CONFIG_USART0_BAUD / 2)) / (CONFIG_USART0_BAUD)) - 1)
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/* Select normal or double speed baud settings. This is a trade-off between the
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* sampling rate and the accuracy of the divisor for high baud rates.
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*
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* As examples, consider:
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*
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* BOARD_CPU_CLOCK=8MHz and BAUD=115200:
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* AVR_NORMAL_UBRR1 = 4 (rounded), actual baud = 125,000
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* AVR_DBLSPEED_UBRR1 = 9 (rounded), actual baud = 111,111
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*
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* BOARD_CPU_CLOCK=8MHz and BAUD=9600:
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* AVR_NORMAL_UBRR1 = 52 (rounded), actual baud = 9615
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* AVR_DBLSPEED_UBRR1 = 104 (rounded), actual baud = 9615
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*/
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#undef UART0_DOUBLE_SPEED
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#if BOARD_CPU_CLOCK <= 4000000
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# if CONFIG_USART0_BAUD <= 9600
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# define AVR_UBRR0 AVR_NORMAL_UBRR0
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# else
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# define AVR_UBRR0 AVR_DBLSPEED_UBRR0
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# define UART0_DOUBLE_SPEED 1
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# endif
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#elif BOARD_CPU_CLOCK <= 8000000
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# if CONFIG_USART0_BAUD <= 19200
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# define AVR_UBRR0 AVR_NORMAL_UBRR0
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# else
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# define AVR_UBRR0 AVR_DBLSPEED_UBRR0
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# define UART0_DOUBLE_SPEED 1
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# endif
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#elif BOARD_CPU_CLOCK <= 12000000
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# if CONFIG_USART0_BAUD <= 28800
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# define AVR_UBRR0 AVR_NORMAL_UBRR0
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# else
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# define AVR_UBRR0 AVR_DBLSPEED_UBRR0
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# define UART0_DOUBLE_SPEED 1
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# endif
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#else
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# error "No CONFIG_USARTn_SERIAL_CONSOLE Setting"
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# if CONFIG_USART0_BAUD <= 38400
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# define AVR_UBRR0 AVR_NORMAL_UBRR0
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# else
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# define AVR_UBRR0 AVR_DBLSPEED_UBRR0
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# define UART0_DOUBLE_SPEED 1
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# endif
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#endif
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/* USART1 Baud rate settings for normal and double speed settings */
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#define AVR_NORMAL_UBRR1 \
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(((BOARD_CPU_CLOCK / 16) + (CONFIG_USART1_BAUD / 2)) / (CONFIG_USART1_BAUD)) - 1)
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#define AVR_DBLSPEED_UBRR1 \
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(((BOARD_CPU_CLOCK / 8) + (CONFIG_USART1_BAUD / 2)) / (CONFIG_USART1_BAUD)) - 1)
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/* Select normal or double speed baud settings. This is a trade-off between the
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* sampling rate and the accuracy of the divisor for high baud rates.
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*
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* As examples, consider:
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*
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* BOARD_CPU_CLOCK=8MHz and BAUD=115200:
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* AVR_NORMAL_UBRR1 = 4 (rounded), actual baud = 125,000
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* AVR_DBLSPEED_UBRR1 = 9 (rounded), actual baud = 111,111
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*
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* BOARD_CPU_CLOCK=8MHz and BAUD=9600:
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* AVR_NORMAL_UBRR1 = 52 (rounded), actual baud = 9615
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* AVR_DBLSPEED_UBRR1 = 104 (rounded), actual baud = 9615
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*/
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#undef UART1_DOUBLE_SPEED
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#if BOARD_CPU_CLOCK <= 4000000
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# if CONFIG_USART1_BAUD <= 9600
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# define AVR_UBRR1 AVR_NORMAL_UBRR1
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# else
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# define AVR_UBRR1 AVR_DBLSPEED_UBRR1
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# define UART1_DOUBLE_SPEED 1
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# endif
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#elif BOARD_CPU_CLOCK <= 8000000
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# if CONFIG_USART1_BAUD <= 19200
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# define AVR_UBRR1 AVR_NORMAL_UBRR1
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# else
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# define AVR_UBRR1 AVR_DBLSPEED_UBRR1
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# define UART1_DOUBLE_SPEED 1
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# endif
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#elif BOARD_CPU_CLOCK <= 12000000
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# if CONFIG_USART1_BAUD <= 28800
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# define AVR_UBRR1 AVR_NORMAL_UBRR1
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# else
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# define AVR_UBRR1 AVR_DBLSPEED_UBRR1
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# define UART1_DOUBLE_SPEED 1
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# endif
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#else
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# if CONFIG_USART1_BAUD <= 38400
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# define AVR_UBRR1 AVR_NORMAL_UBRR1
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# else
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# define AVR_UBRR1 AVR_DBLSPEED_UBRR1
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# define UART1_DOUBLE_SPEED 1
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# endif
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#endif
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/******************************************************************************
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@ -107,14 +196,27 @@
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#ifdef CONFIG_ATMEGA_USART0
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void usart0_reset(void)
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{
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UCSR0A = 0;
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UCSR0B = 0;
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UCSR0C = 0;
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# warning "Missing logic"
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UBRR0 = 0;
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}
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#endif
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#ifdef CONFIG_ATMEGA_USART1
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void usart1_reset(void)
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{
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# warning "Missing logic"
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UCSR1A = 0;
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UCSR1B = 0;
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UCSR1C = 0;
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DDRD &= ~(1 << 3);
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PORTD &= ~(1 << 2);
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UBRR1 = 0;
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}
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#endif
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@ -129,14 +231,123 @@ void usart1_reset(void)
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#ifdef CONFIG_AVR_USART0
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void usart0_configure(void)
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{
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# warning "Missing logic"
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uint8_t ucsr0b;
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uint8_t ucsr0c;
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/* Select normal or double speed. */
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#ifdef UART0_DOUBLE_SPEED
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UCSR0A = (1 << U2X0);
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#else
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UCSR0A = 0;
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#endif
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/* Select baud, parity, nubmer of bits, stop bits, etc. */
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ucsr0b = ((1 << TXEN0) | (1 << RXEN0));
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ucsr0c = 0;
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/* Select parity */
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#if CONFIG_USART0_PARITY == 1
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ucsr0c |= (UPM01 | UPM00); /* Odd parity */
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#else
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ucsr0c |= UPM00; /* Even parity */
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#endif
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/* 1 or 2 stop bits */
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#if defined(CONFIG_USART0_2STOP) && CONFIG_USART0_2STOP > 0
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ucsr0c |= USBS0; /* Two stop bits */
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#endif
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/* Word size */
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#if CONFIG_USART0_BITS == 5
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#elif CONFIG_USART0_BITS == 6
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ucsr0c |= UCSZ00;
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#elif CONFIG_USART0_BITS == 7
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ucsr0c |= UCSZ01;
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#elif CONFIG_USART0_BITS == 8
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ucsr0c |= (UCSZ00 | UCSZ01);
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#elif CONFIG_USART0_BITS == 9
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ucsr0c |= (UCSZ00 | UCSZ01);
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ucsr0b |= UCSZ02;
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#else
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# error "Unsupported word size"
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#endif
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UCSR0B = ucsr0b;
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UCSR0C = ucsr0c;
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/* Configure pin */
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#warning "Missing logic"
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/* Set the baud rate divisor */
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UBRR0 = AVR_UBRR0;
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}
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#endif
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#ifdef CONFIG_AVR_USART1
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void usart1_configure(void)
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{
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# warning "Missing logic"
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uint8_t ucsr1b;
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uint8_t ucsr1c;
|
||||
|
||||
/* Select normal or double speed. */
|
||||
|
||||
#ifdef UART1_DOUBLE_SPEED
|
||||
UCSR1A = (1 << U2X1);
|
||||
#else
|
||||
UCSR1A = 0;
|
||||
#endif
|
||||
|
||||
/* Select baud, parity, nubmer of bits, stop bits, etc. */
|
||||
|
||||
ucsr1b = ((1 << TXEN1) | (1 << RXEN1));
|
||||
ucsr1c = 0;
|
||||
|
||||
/* Select parity */
|
||||
|
||||
#if CONFIG_USART1_PARITY == 1
|
||||
ucsr1c |= (UPM11 | UPM10); /* Odd parity */
|
||||
#else
|
||||
ucsr1c |= UPM11; /* Even parity */
|
||||
#endif
|
||||
|
||||
/* 1 or 2 stop bits */
|
||||
|
||||
#if defined(CONFIG_USART1_2STOP) && CONFIG_USART1_2STOP > 0
|
||||
ucsr1c |= USBS1; /* Two stop bits */
|
||||
#endif
|
||||
|
||||
/* Word size */
|
||||
|
||||
#if CONFIG_USART1_BITS == 5
|
||||
#elif CONFIG_USART1_BITS == 6
|
||||
ucsr1c |= UCSZ10;
|
||||
#elif CONFIG_USART1_BITS == 7
|
||||
ucsr1c |= UCSZ11;
|
||||
#elif CONFIG_USART1_BITS == 8
|
||||
ucsr1c |= (UCSZ10 | UCSZ11);
|
||||
#elif CONFIG_USART1_BITS == 9
|
||||
ucsr1c |= (UCSZ10 | UCSZ11);
|
||||
ucsr1b |= UCSZ12;
|
||||
#else
|
||||
# error "Unsupported word size"
|
||||
#endif
|
||||
UCSR1B = ucsr1b;
|
||||
UCSR1C = ucsr1c;
|
||||
|
||||
/* Configure pin */
|
||||
|
||||
DDRD |= (1 << 3);
|
||||
PORTD |= (1 << 2);
|
||||
|
||||
/* Set the baud rate divisor */
|
||||
|
||||
UBRR1 = AVR_UBRR1;
|
||||
}
|
||||
#endif
|
||||
|
||||
@ -173,9 +384,11 @@ void up_lowputc(char ch)
|
||||
{
|
||||
#ifdef HAVE_SERIAL_CONSOLE
|
||||
# if defined(CONFIG_USART0_SERIAL_CONSOLE)
|
||||
# warning "Missing logic"
|
||||
while ((UCSR0A & (1 << UDRE0)) == 0);
|
||||
UDR0 = ch;
|
||||
# elif defined(CONFIG_USART1_SERIAL_CONSOLE)
|
||||
# warning "Missing logic"
|
||||
while ((UCSR1A & (1 << UDRE1)) == 0);
|
||||
UDR1 = ch;
|
||||
# endif
|
||||
#endif
|
||||
}
|
||||
|
||||
@ -52,6 +52,7 @@
|
||||
#include <nuttx/irq.h>
|
||||
#include <nuttx/arch.h>
|
||||
#include <nuttx/serial.h>
|
||||
#include <avr/io.h>
|
||||
|
||||
#include <arch/board/board.h>
|
||||
|
||||
@ -562,46 +563,32 @@ static int usart1_ioctl(struct file *filep, int cmd, unsigned long arg)
|
||||
#ifdef CONFIG_AVR_USART0
|
||||
static int usart0_receive(struct uart_dev_s *dev, uint32_t *status)
|
||||
{
|
||||
/* Get the Rx byte. The USART Rx interrupt flag is cleared by side effect
|
||||
* when reading the received character.
|
||||
*/
|
||||
|
||||
# warning "Missing logic"
|
||||
|
||||
/* Return status information */
|
||||
|
||||
if (status)
|
||||
{
|
||||
# warning "Missing logic"
|
||||
*status = (uint32_t)UCSR0A;
|
||||
}
|
||||
|
||||
/* Then return the actual received byte */
|
||||
|
||||
# warning "Missing logic"
|
||||
return 0;
|
||||
return UDR0;
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_AVR_USART1
|
||||
static int usart1_receive(struct uart_dev_s *dev, uint32_t *status)
|
||||
{
|
||||
/* Get the Rx byte. The USART Rx interrupt flag is cleared by side effect
|
||||
* when reading the received character.
|
||||
*/
|
||||
|
||||
# warning "Missing logic"
|
||||
|
||||
/* Return status information */
|
||||
|
||||
if (status)
|
||||
{
|
||||
# warning "Missing logic"
|
||||
*status = (uint32_t)UCSR1A;
|
||||
}
|
||||
|
||||
/* Then return the actual received byte */
|
||||
|
||||
# warning "Missing logic"
|
||||
return 0;
|
||||
return UDR1;
|
||||
}
|
||||
#endif
|
||||
|
||||
@ -664,16 +651,14 @@ static void usart1_rxint(struct uart_dev_s *dev, bool enable)
|
||||
#ifdef CONFIG_AVR_USART0
|
||||
static bool usart0_rxavailable(struct uart_dev_s *dev)
|
||||
{
|
||||
# warning "Missing logic"
|
||||
return 0;
|
||||
return (UCSR0A & (1 << RXC0)) != 0;
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_AVR_USART1
|
||||
static bool usart1_rxavailable(struct uart_dev_s *dev)
|
||||
{
|
||||
# warning "Missing logic"
|
||||
return 0;
|
||||
return (UCSR1A & (1 << RXC1)) != 0;
|
||||
}
|
||||
#endif
|
||||
|
||||
@ -688,16 +673,14 @@ static bool usart1_rxavailable(struct uart_dev_s *dev)
|
||||
#ifdef CONFIG_AVR_USART0
|
||||
static void usart0_send(struct uart_dev_s *dev, int ch)
|
||||
{
|
||||
# warning "Missing logic"
|
||||
return 0;
|
||||
UDR0 = ch;
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_AVR_USART0
|
||||
static void usart0_send(struct uart_dev_s *dev, int ch)
|
||||
{
|
||||
# warning "Missing logic"
|
||||
return 0;
|
||||
UDR1 = ch;
|
||||
}
|
||||
#endif
|
||||
|
||||
@ -780,16 +763,14 @@ static void usart1_txint(struct uart_dev_s *dev, bool enable)
|
||||
#ifdef CONFIG_AVR_USART0
|
||||
static bool usart0_txready(struct uart_dev_s *dev)
|
||||
{
|
||||
# warning "Missing logic"
|
||||
return 0;
|
||||
return (UCSR0A & (1 << UDRE0)) != 0;
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_AVR_USART1
|
||||
static bool usart1_txready(struct uart_dev_s *dev)
|
||||
{
|
||||
# warning "Missing logic"
|
||||
return 0;
|
||||
return (UCSR1A & (1 << UDRE1)) != 0;
|
||||
}
|
||||
#endif
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user