X-Git-Url: https://codewiz.org/gitweb?a=blobdiff_plain;f=bertos%2Fcpu%2Favr%2Fdrv%2Fkdebug_avr.c;h=88a7b975bbdf17bb571928c2233664ec54126c17;hb=f1fab319eb3fe91c157b3a9564841aef62a03554;hp=c730836d9509c92cee510e7adf662e9c1799d2c3;hpb=4cc44c9888a0336b9d01121ec0b7ad95f4a76195;p=bertos.git diff --git a/bertos/cpu/avr/drv/kdebug_avr.c b/bertos/cpu/avr/drv/kdebug_avr.c index c730836d..88a7b975 100644 --- a/bertos/cpu/avr/drv/kdebug_avr.c +++ b/bertos/cpu/avr/drv/kdebug_avr.c @@ -26,233 +26,22 @@ * invalidate any other reasons why the executable file might be covered by * the GNU General Public License. * - * Copyright 2003, 2004, 2005, 2006, 2007 Develer S.r.l. (http://www.develer.com/) - * Copyright 2000, 2001, 2002 Bernie Innocenti + * Copyright 2011 Develer S.r.l. (http://www.develer.com/) * * --> * - * \brief AVR debug support (implementation). * - * \version $Id$ - * \author Bernie Innocenti - * \author Stefano Fedrigo - * \author Francesco Sacchi - */ - -#include "hw/hw_cpu.h" /* for CLOCK_FREQ */ -#include "hw/hw_ser.h" /* Required for bus macros overrides */ - -#include "cfg/cfg_debug.h" -#include /* for BV(), DIV_ROUND */ - -#include -#include - -#include - -#if CONFIG_KDEBUG_PORT == 0 - - /* - * Support for special bus policies or external transceivers - * on UART0 (to be overridden in "hw/hw_ser.h"). - * - * HACK: if we don't set TXEN, kdbg disables the transmitter - * after each output statement until the serial driver - * is initialized. These glitches confuse the debug - * terminal that ends up printing some trash. - */ - #ifndef KDBG_UART0_BUS_INIT - #define KDBG_UART0_BUS_INIT do { \ - UCSR0B = BV(TXEN0); \ - } while (0) - #endif - #ifndef KDBG_UART0_BUS_RX - #define KDBG_UART0_BUS_RX do {} while (0) - #endif - #ifndef KDBG_UART0_BUS_TX - #define KDBG_UART0_BUS_TX do {} while (0) - #endif - - #if CPU_AVR_ATMEGA64 || CPU_AVR_ATMEGA128 || CPU_AVR_ATMEGA168 - #define UCR UCSR0B - #define UDR UDR0 - #define USR UCSR0A - #elif CPU_AVR_ATMEGA8 - #define UCR UCSRB - #define USR UCSRA - #else - #error Unknown CPU - #endif - - #define KDBG_WAIT_READY() do { loop_until_bit_is_set(USR, UDRE0); } while(0) - #define KDBG_WAIT_TXDONE() do { loop_until_bit_is_set(USR, TXC0); } while(0) - - /* - * We must clear the TXC flag before sending a new character to allow - * KDBG_WAIT_TXDONE() to work properly. - * - * BUG: if KDBG_WRITE_CHAR() is called after the TXC flag is set by hardware, - * a new TXC could be generated after we've cleared it and before the new - * character is written to UDR. On a 485 bus, the transceiver will be put - * in RX mode while still transmitting the last char. - */ - #define KDBG_WRITE_CHAR(c) do { USR |= BV(TXC0); UDR = (c); } while(0) - - #define KDBG_MASK_IRQ(old) do { \ - (old) = UCR; \ - UCR |= BV(TXEN0); \ - UCR &= ~(BV(TXCIE0) | BV(UDRIE0)); \ - KDBG_UART0_BUS_TX; \ - } while(0) - - #define KDBG_RESTORE_IRQ(old) do { \ - KDBG_WAIT_TXDONE(); \ - KDBG_UART0_BUS_RX; \ - UCR = (old); \ - } while(0) - - typedef uint8_t kdbg_irqsave_t; - -#elif CONFIG_KDEBUG_PORT == 1 - - /* - * Support for special bus policies or external transceivers - * on UART1 (to be overridden in "hw/hw_ser.h"). - * - * HACK: if we don't set TXEN, kdbg disables the transmitter - * after each output statement until the serial driver - * is initialized. These glitches confuse the debug - * terminal that ends up printing some trash. - */ - #ifndef KDBG_UART1_BUS_INIT - #define KDBG_UART1_BUS_INIT do { \ - UCSR1B = BV(TXEN1); \ - } while (0) - #endif - #ifndef KDBG_UART1_BUS_RX - #define KDBG_UART1_BUS_RX do {} while (0) - #endif - #ifndef KDBG_UART1_BUS_TX - #define KDBG_UART1_BUS_TX do {} while (0) - #endif - - #define KDBG_WAIT_READY() do { loop_until_bit_is_set(UCSR1A, UDRE1); } while(0) - #define KDBG_WAIT_TXDONE() do { loop_until_bit_is_set(UCSR1A, TXC1); } while(0) - #define KDBG_WRITE_CHAR(c) do { UCSR1A |= BV(TXC1); UDR1 = (c); } while(0) - - #define KDBG_MASK_IRQ(old) do { \ - (old) = UCSR1B; \ - UCSR1B |= BV(TXEN1); \ - UCSR1B &= ~(BV(TXCIE1) | BV(UDRIE1)); \ - KDBG_UART1_BUS_TX; \ - } while(0) - - #define KDBG_RESTORE_IRQ(old) do { \ - KDBG_WAIT_TXDONE(); \ - KDBG_UART1_BUS_RX; \ - UCSR1B = (old); \ - } while(0) - - typedef uint8_t kdbg_irqsave_t; - -/* - * Special debug port for BitBanged Serial see below for details... + * \author Luca Ottaviano + * + * \brief Low-level kdebug module for AVR (inplementation). */ -#elif CONFIG_KDEBUG_PORT == 666 - #include "hw/hw_ser.h" - #define KDBG_WAIT_READY() do { /*nop*/ } while(0) - #define KDBG_WRITE_CHAR(c) _kdebug_bitbang_putchar((c)) - #define KDBG_MASK_IRQ(old) do { IRQ_SAVE_DISABLE((old)); } while(0) - #define KDBG_RESTORE_IRQ(old) do { IRQ_RESTORE((old)); } while(0) - typedef cpuflags_t kdbg_irqsave_t; - - #define KDBG_DELAY (((CLOCK_FREQ + CONFIG_KDEBUG_BAUDRATE / 2) / CONFIG_KDEBUG_BAUDRATE) + 7) / 14 - - static void _kdebug_bitbang_delay(void) - { - unsigned long i; - - for (i = 0; i < KDBG_DELAY; i++) - { - NOP; - NOP; - NOP; - NOP; - NOP; - } - } - /** - * Putchar for BITBANG serial debug console. - * Sometimes, we can't permit to use a whole serial for debugging purpose. - * Since debug console is in output only it is usefull to use a single generic I/O pin for debug. - * This is achieved by this simple function, that shift out the data like a UART, but - * in software :) - * The only requirement is that SER_BITBANG_* macros will be defined somewhere (usually hw_ser.h) - * \note All interrupts are disabled during debug prints! - */ - static void _kdebug_bitbang_putchar(char c) - { - int i; - uint16_t data = c; +#include - /* Add stop bit */ - data |= 0x0100; - - /* Add start bit*/ - data <<= 1; - - /* Shift out data */ - uint16_t shift = 1; - for (i = 0; i < 10; i++) - { - if (data & shift) - SER_BITBANG_HIGH; - else - SER_BITBANG_LOW; - _kdebug_bitbang_delay(); - shift <<= 1; - } - } +#if CPU_AVR_MEGA + #include "kdebug_mega.c" +#elif CPU_AVR_XMEGA + #include "kdebug_xmega.c" #else - #error CONFIG_KDEBUG_PORT should be either 0, 1 or 666 + #error Unknown CPU #endif - - -INLINE void kdbg_hw_init(void) -{ - #if CONFIG_KDEBUG_PORT == 666 - SER_BITBANG_INIT; - #else /* CONFIG_KDEBUG_PORT != 666 */ - /* Compute the baud rate */ - uint16_t period = DIV_ROUND(CLOCK_FREQ / 16UL, CONFIG_KDEBUG_BAUDRATE) - 1; - - #if (CPU_AVR_ATMEGA64 || CPU_AVR_ATMEGA128) - #if CONFIG_KDEBUG_PORT == 0 - UBRR0H = (uint8_t)(period>>8); - UBRR0L = (uint8_t)period; - KDBG_UART0_BUS_INIT; - #elif CONFIG_KDEBUG_PORT == 1 - UBRR1H = (uint8_t)(period>>8); - UBRR1L = (uint8_t)period; - KDBG_UART1_BUS_INIT; - #else - #error CONFIG_KDEBUG_PORT must be either 0 or 1 - #endif - - #elif CPU_AVR_ATMEGA168 - UBRR0H = (uint8_t)(period>>8); - UBRR0L = (uint8_t)period; - KDBG_UART0_BUS_INIT; - #elif CPU_AVR_ATMEGA8 - UBRRH = (uint8_t)(period>>8); - UBRRL = (uint8_t)period; - #elif CPU_AVR_ATMEGA103 - UBRR = (uint8_t)period; - KDBG_UART0_BUS_INIT; - #else - #error Unknown CPU - #endif - #endif /* CONFIG_KDEBUG_PORT == 666 */ -} -