This is a FileHandle interface implementation and retarget registration of the stdio interface to the Segger Real-Time Terminal (RTT) instead of the default serial port. Retargeting will automatically take place if this library is added to the project.
Dependents: 3_Test_AFE 1_Test_Flash_ADC_RTT
Diff: SeggerRTT/SEGGER_RTT_Conf.h
- Revision:
- 0:7fca1bf48117
diff -r 000000000000 -r 7fca1bf48117 SeggerRTT/SEGGER_RTT_Conf.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/SeggerRTT/SEGGER_RTT_Conf.h Sat May 18 22:41:10 2019 +0000 @@ -0,0 +1,213 @@ +/********************************************************************* +* SEGGER Microcontroller GmbH * +* The Embedded Experts * +********************************************************************** +* * +* (c) 1995 - 2019 SEGGER Microcontroller GmbH * +* * +* www.segger.com Support: support@segger.com * +* * +********************************************************************** +* * +* SEGGER RTT * Real Time Transfer for embedded targets * +* * +********************************************************************** +* * +* All rights reserved. * +* * +* SEGGER strongly recommends to not make any changes * +* to or modify the source code of this software in order to stay * +* compatible with the RTT protocol and J-Link. * +* * +* Redistribution and use in source and binary forms, with or * +* without modification, are permitted provided that the following * +* conditions are met: * +* * +* o Redistributions of source code must retain the above copyright * +* notice, this list of conditions and the following disclaimer. * +* * +* o 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. * +* * +* o Neither the name of SEGGER Microcontroller GmbH * +* 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 SEGGER Microcontroller 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. * +* * +********************************************************************** +* * +* RTT version: 6.44i * +* * +********************************************************************** +---------------------------END-OF-HEADER------------------------------ +File : SEGGER_RTT_Conf.h +Purpose : Implementation of SEGGER real-time transfer (RTT) which + allows real-time communication on targets which support + debugger memory accesses while the CPU is running. +Revision: Rev: 13430 + +*/ + +#ifndef SEGGER_RTT_CONF_H +#define SEGGER_RTT_CONF_H + +/********************************************************************* +* +* Defines, configurable +* +********************************************************************** +*/ + +#define SEGGER_RTT_MAX_NUM_UP_BUFFERS (1) // Max. number of up-buffers (T->H) available on this target (Default: 3) +#define SEGGER_RTT_MAX_NUM_DOWN_BUFFERS (1) // Max. number of down-buffers (H->T) available on this target (Default: 3) + +// configure SEGGER_RTT_BUFFER_SIZE_* with compiler flags (default: see SEGGER_RTT.c) +//#define BUFFER_SIZE_UP (1024) // Size of the buffer for terminal output of target, up to host (Default: 1k) +//#define BUFFER_SIZE_DOWN (16) // Size of the buffer for terminal input to target from host (Usually keyboard input) (Default: 16) + +// configure SEGGER_RTT_PRINTF_BUFFER_SIZE with compiler flags (default: see SEGGER_RTT_printf.c) +//#define SEGGER_RTT_PRINTF_BUFFER_SIZE (64u) // Size of buffer for RTT printf to bulk-send chars via RTT (Default: 64) + +// configure SEGGER_RTT_MODE_DEFAULT with compiler flags, if needed (default: see SEGGER_RTT.c) +//#define SEGGER_RTT_MODE_DEFAULT SEGGER_RTT_MODE_NO_BLOCK_SKIP // Mode for pre-initialized terminal channel (buffer 0) + +/********************************************************************* +* +* RTT memcpy configuration +* +* memcpy() is good for large amounts of data, +* but the overhead is big for small amounts, which are usually stored via RTT. +* With SEGGER_RTT_MEMCPY_USE_BYTELOOP a simple byte loop can be used instead. +* +* SEGGER_RTT_MEMCPY() can be used to replace standard memcpy() in RTT functions. +* This is may be required with memory access restrictions, +* such as on Cortex-A devices with MMU. +*/ +#define SEGGER_RTT_MEMCPY_USE_BYTELOOP 0 // 0: Use memcpy/SEGGER_RTT_MEMCPY, 1: Use a simple byte-loop +// +// Example definition of SEGGER_RTT_MEMCPY to external memcpy with GCC toolchains and Cortex-A targets +// +//#if ((defined __SES_ARM) || (defined __CROSSWORKS_ARM) || (defined __GNUC__)) && (defined (__ARM_ARCH_7A__)) +// #define SEGGER_RTT_MEMCPY(pDest, pSrc, NumBytes) SEGGER_memcpy((pDest), (pSrc), (NumBytes)) +//#endif + +// +// Target is not allowed to perform other RTT operations while string still has not been stored completely. +// Otherwise we would probably end up with a mixed string in the buffer. +// If using RTT from within interrupts, multiple tasks or multi processors, define the SEGGER_RTT_LOCK() and SEGGER_RTT_UNLOCK() function here. +// +// SEGGER_RTT_MAX_INTERRUPT_PRIORITY can be used in the sample lock routines on Cortex-M3/4. +// Make sure to mask all interrupts which can send RTT data, i.e. generate SystemView events, or cause task switches. +// When high-priority interrupts must not be masked while sending RTT data, SEGGER_RTT_MAX_INTERRUPT_PRIORITY needs to be adjusted accordingly. +// (Higher priority = lower priority number) +// Default value for embOS: 128u +// Default configuration in FreeRTOS: configMAX_SYSCALL_INTERRUPT_PRIORITY: ( configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY << (8 - configPRIO_BITS) ) +// In case of doubt mask all interrupts: 1 << (8 - BASEPRI_PRIO_BITS) i.e. 1 << 5 when 3 bits are implemented in NVIC +// or define SEGGER_RTT_LOCK() to completely disable interrupts. +// + +#define SEGGER_RTT_MAX_INTERRUPT_PRIORITY (0x20) // Interrupt priority to lock on SEGGER_RTT_LOCK on Cortex-M3/4 (Default: 0x20) + +/********************************************************************* +* +* RTT lock configuration for SEGGER Embedded Studio, +* Rowley CrossStudio and GCC +*/ +#if (defined __SES_ARM) || (defined __CROSSWORKS_ARM) || (defined __GNUC__) || (defined __clang__) + #if (defined(__ARM_ARCH_6M__) || defined(__ARM_ARCH_8M_BASE__)) + #define SEGGER_RTT_LOCK() { \ + unsigned int LockState; \ + __asm volatile ("mrs %0, primask \n\t" \ + "movs r1, $1 \n\t" \ + "msr primask, r1 \n\t" \ + : "=r" (LockState) \ + : \ + : "r1" \ + ); + + #define SEGGER_RTT_UNLOCK() __asm volatile ("msr primask, %0 \n\t" \ + : \ + : "r" (LockState) \ + : \ + ); \ + } + #elif (defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7EM__) || defined(__ARM_ARCH_8M_MAIN__)) + #ifndef SEGGER_RTT_MAX_INTERRUPT_PRIORITY + #define SEGGER_RTT_MAX_INTERRUPT_PRIORITY (0x20) + #endif + #define SEGGER_RTT_LOCK() { \ + unsigned int LockState; \ + __asm volatile ("mrs %0, basepri \n\t" \ + "mov r1, %1 \n\t" \ + "msr basepri, r1 \n\t" \ + : "=r" (LockState) \ + : "i"(SEGGER_RTT_MAX_INTERRUPT_PRIORITY) \ + : "r1" \ + ); + + #define SEGGER_RTT_UNLOCK() __asm volatile ("msr basepri, %0 \n\t" \ + : \ + : "r" (LockState) \ + : \ + ); \ + } + + #elif defined(__ARM_ARCH_7A__) + #define SEGGER_RTT_LOCK() { \ + unsigned int LockState; \ + __asm volatile ("mrs r1, CPSR \n\t" \ + "mov %0, r1 \n\t" \ + "orr r1, r1, #0xC0 \n\t" \ + "msr CPSR_c, r1 \n\t" \ + : "=r" (LockState) \ + : \ + : "r1" \ + ); + + #define SEGGER_RTT_UNLOCK() __asm volatile ("mov r0, %0 \n\t" \ + "mrs r1, CPSR \n\t" \ + "bic r1, r1, #0xC0 \n\t" \ + "and r0, r0, #0xC0 \n\t" \ + "orr r1, r1, r0 \n\t" \ + "msr CPSR_c, r1 \n\t" \ + : \ + : "r" (LockState) \ + : "r0", "r1" \ + ); \ + } +#else + #define SEGGER_RTT_LOCK() + #define SEGGER_RTT_UNLOCK() + #endif +#endif + +/********************************************************************* +* +* RTT lock configuration fallback +*/ +#ifndef SEGGER_RTT_LOCK + #define SEGGER_RTT_LOCK() // Lock RTT (nestable) (i.e. disable interrupts) +#endif + +#ifndef SEGGER_RTT_UNLOCK + #define SEGGER_RTT_UNLOCK() // Unlock RTT (nestable) (i.e. enable previous interrupt lock state) +#endif + +#endif +/*************************** End of file ****************************/ \ No newline at end of file