From 8a7831ee4debdb71b94351bbd6e3e1bfebcc52d3 Mon Sep 17 00:00:00 2001 From: guo Date: Tue, 19 Sep 2023 12:27:58 +0800 Subject: [PATCH] =?UTF-8?q?[bsp/IFX]=E8=A1=A5=E5=85=85=E7=BC=BA=E5=B0=91?= =?UTF-8?q?=E7=9A=84=E6=96=87=E4=BB=B6=20(#8055)?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- .../libraries/IFX_PSOC6_HAL/SConscript | 1 + .../IFX_PSOC6_HAL/retarget-io/.gitignore | 1 + .../libraries/IFX_PSOC6_HAL/retarget-io/EULA | 55 ++ .../IFX_PSOC6_HAL/retarget-io/LICENSE | 165 +++++ .../IFX_PSOC6_HAL/retarget-io/README.md | 38 ++ .../IFX_PSOC6_HAL/retarget-io/RELEASE.md | 49 ++ .../retarget-io/cy_retarget_io.c | 603 ++++++++++++++++++ .../retarget-io/cy_retarget_io.h | 99 +++ .../IFX_PSOC6_HAL/retarget-io/version.xml | 1 + 9 files changed, 1012 insertions(+) create mode 100644 bsp/Infineon/libraries/IFX_PSOC6_HAL/retarget-io/.gitignore create mode 100644 bsp/Infineon/libraries/IFX_PSOC6_HAL/retarget-io/EULA create mode 100644 bsp/Infineon/libraries/IFX_PSOC6_HAL/retarget-io/LICENSE create mode 100644 bsp/Infineon/libraries/IFX_PSOC6_HAL/retarget-io/README.md create mode 100644 bsp/Infineon/libraries/IFX_PSOC6_HAL/retarget-io/RELEASE.md create mode 100644 bsp/Infineon/libraries/IFX_PSOC6_HAL/retarget-io/cy_retarget_io.c create mode 100644 bsp/Infineon/libraries/IFX_PSOC6_HAL/retarget-io/cy_retarget_io.h create mode 100644 bsp/Infineon/libraries/IFX_PSOC6_HAL/retarget-io/version.xml diff --git a/bsp/Infineon/libraries/IFX_PSOC6_HAL/SConscript b/bsp/Infineon/libraries/IFX_PSOC6_HAL/SConscript index 9c8345147f..2f3a0534ef 100644 --- a/bsp/Infineon/libraries/IFX_PSOC6_HAL/SConscript +++ b/bsp/Infineon/libraries/IFX_PSOC6_HAL/SConscript @@ -78,6 +78,7 @@ if GetDepend(['SOC_CY8C6244LQI_S4D92']): src += Glob('psoc6cm0p/COMPONENT_CM0P_SLEEP/*.c') if GetDepend(['RT_USING_SERIAL']): + src += ['retarget-io/cy_retarget_io.c'] src += ['mtb-hal-cat1/source/cyhal_uart.c'] src += ['mtb-pdl-cat1/drivers/source/cy_scb_uart.c'] diff --git a/bsp/Infineon/libraries/IFX_PSOC6_HAL/retarget-io/.gitignore b/bsp/Infineon/libraries/IFX_PSOC6_HAL/retarget-io/.gitignore new file mode 100644 index 0000000000..d8f8d46921 --- /dev/null +++ b/bsp/Infineon/libraries/IFX_PSOC6_HAL/retarget-io/.gitignore @@ -0,0 +1 @@ +docs diff --git a/bsp/Infineon/libraries/IFX_PSOC6_HAL/retarget-io/EULA b/bsp/Infineon/libraries/IFX_PSOC6_HAL/retarget-io/EULA new file mode 100644 index 0000000000..f10c742b10 --- /dev/null +++ b/bsp/Infineon/libraries/IFX_PSOC6_HAL/retarget-io/EULA @@ -0,0 +1,55 @@ +CYPRESS END USER LICENSE AGREEMENT + +PLEASE READ THIS END USER LICENSE AGREEMENT ("Agreement") CAREFULLY BEFORE DOWNLOADING, INSTALLING, COPYING, OR USING THIS SOFTWARE AND ACCOMPANYING DOCUMENTATION. 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Limitation of Liability. + +In no event and under no legal theory, whether in tort (including negligence), +contract, or otherwise, unless required by applicable law (such as deliberate +and grossly negligent acts) or agreed to in writing, shall any Contributor be +liable to You for damages, including any direct, indirect, special, incidental, +or consequential damages of any character arising as a result of this License or +out of the use or inability to use the Work (including but not limited to +damages for loss of goodwill, work stoppage, computer failure or malfunction, or +any and all other commercial damages or losses), even if such Contributor has +been advised of the possibility of such damages. + +9. Accepting Warranty or Additional Liability. + +While redistributing the Work or Derivative Works thereof, You may choose to +offer, and charge a fee for, acceptance of support, warranty, indemnity, or +other liability obligations and/or rights consistent with this License. However, +in accepting such obligations, You may act only on Your own behalf and on Your +sole responsibility, not on behalf of any other Contributor, and only if You +agree to indemnify, defend, and hold each Contributor harmless for any liability +incurred by, or claims asserted against, such Contributor by reason of your +accepting any such warranty or additional liability. diff --git a/bsp/Infineon/libraries/IFX_PSOC6_HAL/retarget-io/README.md b/bsp/Infineon/libraries/IFX_PSOC6_HAL/retarget-io/README.md new file mode 100644 index 0000000000..df5f1baf62 --- /dev/null +++ b/bsp/Infineon/libraries/IFX_PSOC6_HAL/retarget-io/README.md @@ -0,0 +1,38 @@ +# Retarget IO + +### Overview + +A utility library to retarget the standard input/output (STDIO) messages to a UART port. With this library, you can directly print messages on a UART terminal using `printf()`. You can specify the TX pin, RX pin, and the baud rate through the `cy_retarget_io_init()` function. The UART HAL object is externally accessible so that you can use it with other UART HAL functions. + +**NOTE:** The standard library is not standard in how it treats an I/O stream. Some implement a data buffer by default. The buffer is not flushed until it is full. In that case it may appear that your I/O is not working. You should be aware of how the library buffers data, and you should identify a buffering strategy and buffer size for a specified stream. If you supply a buffer, it must exist until the stream is closed. The following line of code disables the buffer for the standard library that accompanies the GCC compiler: + + setvbuf( stdin, NULL, _IONBF, 0 ); + +**NOTE:** If the application is built using newlib-nano, by default, floating point format strings (%f) are not supported. To enable this support, you must add `-u _printf_float` to the linker command line. + +# RTOS Integration +To avoid concurrent access to the UART peripheral in a RTOS environment, the ARM and IAR libraries use mutexes to control access to stdio streams. For Newlib (GCC_ARM), the mutex must be implemented in _write() and can be enabled by adding `DEFINES+=CY_RTOS_AWARE` to the Makefile. For all libraries, the program must start the RTOS kernel before calling any stdio functions. + +### Quick Start +1. Add `#include "cy_retarget_io.h"` +2. Call `cy_retarget_io_init(CYBSP_DEBUG_UART_TX, CYBSP_DEBUG_UART_RX, CY_RETARGET_IO_BAUDRATE);` + + `CYBSP_DEBUG_UART_TX` and `CYBSP_DEBUG_UART_RX` pins are defined in the BSP and `CY_RETARGET_IO_BAUDRATE` is set to 115200. You can use a different baud rate if you prefer. + +3. Start printing using `printf()` + +### Enabling Conversion of '\\n' into "\r\n" +If you want to use only '\\n' instead of "\r\n" for printing a new line using printf(), define the macro `CY_RETARGET_IO_CONVERT_LF_TO_CRLF` using the *DEFINES* variable in the application Makefile. The library will then append '\\r' before '\\n' character on the output direction (STDOUT). No conversion occurs if "\r\n" is already present. + +### More information + +* [API Reference Guide](https://infineon.github.io/retarget-io/html/index.html) +* [Cypress Semiconductor, an Infineon Technologies Company](http://www.cypress.com) +* [Infineon GitHub](https://github.com/infineon) +* [ModusToolbox™](https://www.cypress.com/products/modustoolbox-software-environment) +* [PSoC™ 6 Code Examples using ModusToolbox™ IDE](https://github.com/infineon/Code-Examples-for-ModusToolbox-Software) +* [ModusToolbox™ Software](https://github.com/Infineon/modustoolbox-software) +* [PSoC™ 6 Resources - KBA223067](https://community.cypress.com/docs/DOC-14644) + +--- +© Cypress Semiconductor Corporation (an Infineon company) or an affiliate of Cypress Semiconductor Corporation, 2019-2021. diff --git a/bsp/Infineon/libraries/IFX_PSOC6_HAL/retarget-io/RELEASE.md b/bsp/Infineon/libraries/IFX_PSOC6_HAL/retarget-io/RELEASE.md new file mode 100644 index 0000000000..f8faf96a0c --- /dev/null +++ b/bsp/Infineon/libraries/IFX_PSOC6_HAL/retarget-io/RELEASE.md @@ -0,0 +1,49 @@ +# Retarget IO + +A utility library to retarget the standard input/output (STDIO) messages to a UART port. With this library, you can directly print messages on a UART terminal using `printf()`. + +### What's Included? +* printf() support over a UART terminal +* Support for GCC, IAR, and ARM toolchains +* Thread safe write for NewLib + +### What Changed? +#### v1.3.0 +* Added support for checking whether data is being transmitted and waiting until done before finishing the deinit process +* Added support for using with HAL v1 or v2 +#### v1.2.0 +* Improve error handling +* Add de-initialization of the mutex to `cy_retarget_io_deinit` +* Update documentation for integration of the library in a RTOS environment. +#### v1.1.1 +* Minor update for documentation & branding +#### v1.1.0 +* Implemented system I/O retarget functions specific to ARM Compiler 6. +* Made _write implementation thread-safe for Newlib. +#### v1.0.0 +* Initial release + +### Supported Software and Tools +This version of the Retarget IO was validated for compatibility with the following Software and Tools: + +| Software and Tools | Version | +| :--- | :----: | +| ModusToolbox™ Software Environment | 2.4.0 | +| GCC Compiler | 10.3.1 | +| IAR Compiler | 8.4 | +| ARM Compiler 6 | 6.11 | + +Minimum required ModusToolbox™ Software Environment: v2.0 + +### More information + +* [API Reference Guide](https://infineon.github.io/retarget-io/html/index.html) +* [Cypress Semiconductor, an Infineon Technologies Company](http://www.cypress.com) +* [Infineon GitHub](https://github.com/infineon) +* [ModusToolbox™](https://www.cypress.com/products/modustoolbox-software-environment) +* [PSoC™ 6 Code Examples using ModusToolbox™ IDE](https://github.com/infineon/Code-Examples-for-ModusToolbox-Software) +* [ModusToolbox™ Software](https://github.com/Infineon/modustoolbox-software) +* [PSoC™ 6 Resources - KBA223067](https://community.cypress.com/docs/DOC-14644) + +--- +© Cypress Semiconductor Corporation (an Infineon company) or an affiliate of Cypress Semiconductor Corporation, 2019-2021. \ No newline at end of file diff --git a/bsp/Infineon/libraries/IFX_PSOC6_HAL/retarget-io/cy_retarget_io.c b/bsp/Infineon/libraries/IFX_PSOC6_HAL/retarget-io/cy_retarget_io.c new file mode 100644 index 0000000000..5a6239836d --- /dev/null +++ b/bsp/Infineon/libraries/IFX_PSOC6_HAL/retarget-io/cy_retarget_io.c @@ -0,0 +1,603 @@ +/***************************************************************************//** +* \file cy_retarget_io.c +* +* \brief +* Provides APIs for retargeting stdio to UART hardware contained on the Cypress +* kits. +* +******************************************************************************** +* \copyright +* Copyright 2018-2021 Cypress Semiconductor Corporation (an Infineon company) or +* an affiliate of Cypress Semiconductor Corporation +* +* SPDX-License-Identifier: Apache-2.0 +* +* Licensed under the Apache License, Version 2.0 (the "License"); +* you may not use this file except in compliance with the License. +* You may obtain a copy of the License at +* +* http://www.apache.org/licenses/LICENSE-2.0 +* +* Unless required by applicable law or agreed to in writing, software +* distributed under the License is distributed on an "AS IS" BASIS, +* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +* See the License for the specific language governing permissions and +* limitations under the License. +*******************************************************************************/ + +#include "cy_retarget_io.h" +#include "cyhal_hw_types.h" +#include "cyhal_uart.h" +#include "cy_utils.h" +#include "cyhal_system.h" +#include +#include + +#if (defined(CY_RTOS_AWARE) || defined(COMPONENT_RTOS_AWARE)) && defined(__GNUC__) && \ + !defined(__ARMCC_VERSION) && !defined(__clang__) + +// The cyhal_uart driver is not necessarily thread-safe. To avoid concurrent +// access, the ARM and IAR libraries use mutexes to control access to stdio +// streams. For Newlib, the mutex must be implemented in _write(). For all +// libraries, the program must start the RTOS kernel before calling any stdio +// functions. + +#include "cyabs_rtos.h" + +static cy_mutex_t cy_retarget_io_mutex; +static bool cy_retarget_io_mutex_initialized = false; +//-------------------------------------------------------------------------------------------------- +// cy_retarget_io_mutex_init +//-------------------------------------------------------------------------------------------------- +static cy_rslt_t cy_retarget_io_mutex_init(void) +{ + cy_rslt_t rslt; + if (cy_retarget_io_mutex_initialized) + { + rslt = CY_RSLT_SUCCESS; + } + else if (CY_RSLT_SUCCESS == (rslt = cy_rtos_init_mutex(&cy_retarget_io_mutex))) + { + cy_retarget_io_mutex_initialized = true; + } + return rslt; +} + + +//-------------------------------------------------------------------------------------------------- +// cy_retarget_io_mutex_acquire +//-------------------------------------------------------------------------------------------------- +static void cy_retarget_io_mutex_acquire(void) +{ + CY_ASSERT(cy_retarget_io_mutex_initialized); + cy_rslt_t rslt = cy_rtos_get_mutex(&cy_retarget_io_mutex, CY_RTOS_NEVER_TIMEOUT); + if (rslt != CY_RSLT_SUCCESS) + { + abort(); + } +} + + +//-------------------------------------------------------------------------------------------------- +// cy_retarget_io_mutex_release +//-------------------------------------------------------------------------------------------------- +static void cy_retarget_io_mutex_release(void) +{ + CY_ASSERT(cy_retarget_io_mutex_initialized); + cy_rslt_t rslt = cy_rtos_set_mutex(&cy_retarget_io_mutex); + if (rslt != CY_RSLT_SUCCESS) + { + abort(); + } +} + + +//-------------------------------------------------------------------------------------------------- +// cy_retarget_io_mutex_deinit +//-------------------------------------------------------------------------------------------------- +static void cy_retarget_io_mutex_deinit(void) +{ + CY_ASSERT(cy_retarget_io_mutex_initialized); + cy_rslt_t rslt = cy_rtos_deinit_mutex(&cy_retarget_io_mutex); + if (rslt != CY_RSLT_SUCCESS) + { + abort(); + } +} + + +#else // if (defined(CY_RTOS_AWARE) || defined(COMPONENT_RTOS_AWARE)) && defined(__GNUC__) && +// !defined(__ARMCC_VERSION) && !defined(__clang__) +#ifdef __ICCARM__ +// Ignore unused functions +#pragma diag_suppress=Pe177 +#endif +//-------------------------------------------------------------------------------------------------- +// cy_retarget_io_mutex_init +//-------------------------------------------------------------------------------------------------- +static inline cy_rslt_t cy_retarget_io_mutex_init(void) +{ + return CY_RSLT_SUCCESS; +} + + +#if defined(__ARMCC_VERSION) // ARM-MDK +__attribute__((unused)) +#endif +//-------------------------------------------------------------------------------------------------- +// cy_retarget_io_mutex_acquire +//-------------------------------------------------------------------------------------------------- +static inline void cy_retarget_io_mutex_acquire(void) +{ +} + + +#if defined(__ARMCC_VERSION) // ARM-MDK +__attribute__((unused)) +#endif +//-------------------------------------------------------------------------------------------------- +// cy_retarget_io_mutex_release +//-------------------------------------------------------------------------------------------------- +static inline void cy_retarget_io_mutex_release(void) +{ +} + + +#if defined(__ARMCC_VERSION) // ARM-MDK +__attribute__((unused)) +#endif +//-------------------------------------------------------------------------------------------------- +// cy_retarget_io_mutex_deinit +//-------------------------------------------------------------------------------------------------- +static inline void cy_retarget_io_mutex_deinit(void) +{ +} + + +#endif // if (defined(CY_RTOS_AWARE) || defined(COMPONENT_RTOS_AWARE)) && defined(__GNUC__) && +// !defined(__ARMCC_VERSION) && !defined(__clang__) + +#if defined(__cplusplus) +extern "C" { +#endif + +// UART HAL object used by BSP for Debug UART port +cyhal_uart_t cy_retarget_io_uart_obj; + +// Tracks the previous character sent to output stream +#ifdef CY_RETARGET_IO_CONVERT_LF_TO_CRLF +static char cy_retarget_io_stdout_prev_char = 0; +#endif // CY_RETARGET_IO_CONVERT_LF_TO_CRLF + +//-------------------------------------------------------------------------------------------------- +// cy_retarget_io_getchar +//-------------------------------------------------------------------------------------------------- +static inline cy_rslt_t cy_retarget_io_getchar(char* c) +{ + return cyhal_uart_getc(&cy_retarget_io_uart_obj, (uint8_t*)c, 0); +} + + +//-------------------------------------------------------------------------------------------------- +// cy_retarget_io_putchar +//-------------------------------------------------------------------------------------------------- +static inline cy_rslt_t cy_retarget_io_putchar(char c) +{ + return cyhal_uart_putc(&cy_retarget_io_uart_obj, (uint8_t)c); +} + + +#if defined(__ARMCC_VERSION) // ARM-MDK +//-------------------------------------------------------------------------------------------------- +// fputc +//-------------------------------------------------------------------------------------------------- +__attribute__((weak)) int fputc(int ch, FILE* f) +{ + (void)f; + cy_rslt_t rslt = CY_RSLT_SUCCESS; + #ifdef CY_RETARGET_IO_CONVERT_LF_TO_CRLF + if (((char)ch == '\n') && (cy_retarget_io_stdout_prev_char != '\r')) + { + rslt = cy_retarget_io_putchar('\r'); + } + #endif // CY_RETARGET_IO_CONVERT_LF_TO_CRLF + + if (CY_RSLT_SUCCESS == rslt) + { + rslt = cy_retarget_io_putchar(ch); + } + + #ifdef CY_RETARGET_IO_CONVERT_LF_TO_CRLF + if (CY_RSLT_SUCCESS == rslt) + { + cy_retarget_io_stdout_prev_char = (char)ch; + } + #endif // CY_RETARGET_IO_CONVERT_LF_TO_CRLF + + return (CY_RSLT_SUCCESS == rslt) ? ch : EOF; +} + + +#elif defined (__ICCARM__) // IAR + #include + +//-------------------------------------------------------------------------------------------------- +// __write +//-------------------------------------------------------------------------------------------------- +__weak size_t __write(int handle, const unsigned char* buffer, size_t size) +{ + size_t nChars = 0; + // This template only writes to "standard out", for all other file handles it returns failure. + if (handle != _LLIO_STDOUT) + { + return (_LLIO_ERROR); + } + if (buffer != NULL) + { + cy_rslt_t rslt = CY_RSLT_SUCCESS; + for (; nChars < size; ++nChars) + { + #ifdef CY_RETARGET_IO_CONVERT_LF_TO_CRLF + if ((*buffer == '\n') && (cy_retarget_io_stdout_prev_char != '\r')) + { + rslt = cy_retarget_io_putchar('\r'); + } + #endif // CY_RETARGET_IO_CONVERT_LF_TO_CRLF + + if (rslt == CY_RSLT_SUCCESS) + { + rslt = cy_retarget_io_putchar(*buffer); + } + + if (rslt != CY_RSLT_SUCCESS) + { + break; + } + + #ifdef CY_RETARGET_IO_CONVERT_LF_TO_CRLF + cy_retarget_io_stdout_prev_char = *buffer; + #endif // CY_RETARGET_IO_CONVERT_LF_TO_CRLF + ++buffer; + } + } + return (nChars); +} + + +#else // (__GNUC__) GCC +// Add an explicit reference to the floating point printf library to allow the usage of floating +// point conversion specifier. +__asm(".global _printf_float"); +//-------------------------------------------------------------------------------------------------- +// _write +//-------------------------------------------------------------------------------------------------- +__attribute__((weak)) int _write(int fd, const char* ptr, int len) +{ + int nChars = 0; + (void)fd; + if (ptr != NULL) + { + cy_rslt_t rslt = CY_RSLT_SUCCESS; + cy_retarget_io_mutex_acquire(); + for (; nChars < len; ++nChars) + { + #ifdef CY_RETARGET_IO_CONVERT_LF_TO_CRLF + if ((*ptr == '\n') && (cy_retarget_io_stdout_prev_char != '\r')) + { + rslt = cy_retarget_io_putchar('\r'); + } + #endif // CY_RETARGET_IO_CONVERT_LF_TO_CRLF + + if (CY_RSLT_SUCCESS == rslt) + { + rslt = cy_retarget_io_putchar((uint32_t)*ptr); + } + + if (CY_RSLT_SUCCESS != rslt) + { + break; + } + + #ifdef CY_RETARGET_IO_CONVERT_LF_TO_CRLF + cy_retarget_io_stdout_prev_char = *ptr; + #endif // CY_RETARGET_IO_CONVERT_LF_TO_CRLF + ++ptr; + } + cy_retarget_io_mutex_release(); + } + return (nChars); +} + + +#endif // if defined(__ARMCC_VERSION) + + +#if defined(__ARMCC_VERSION) // ARM-MDK +//-------------------------------------------------------------------------------------------------- +// fgetc +//-------------------------------------------------------------------------------------------------- +__attribute__((weak)) int fgetc(FILE* f) +{ + (void)f; + char c; + cy_rslt_t rslt = cy_retarget_io_getchar(&c); + return (CY_RSLT_SUCCESS == rslt) ? c : EOF; +} + + +#elif defined (__ICCARM__) // IAR +//-------------------------------------------------------------------------------------------------- +// __read +//-------------------------------------------------------------------------------------------------- +__weak size_t __read(int handle, unsigned char* buffer, size_t size) +{ + // This template only reads from "standard in", for all other file handles it returns failure. + if ((handle != _LLIO_STDIN) || (buffer == NULL)) + { + return (_LLIO_ERROR); + } + else + { + cy_rslt_t rslt = cy_retarget_io_getchar((char*)buffer); + return (CY_RSLT_SUCCESS == rslt) ? 1 : 0; + } +} + + +#else // (__GNUC__) GCC +// Add an explicit reference to the floating point scanf library to allow the usage of floating +// point conversion specifier. +__asm(".global _scanf_float"); +//-------------------------------------------------------------------------------------------------- +// _read +//-------------------------------------------------------------------------------------------------- +__attribute__((weak)) int _read(int fd, char* ptr, int len) +{ + (void)fd; + + cy_rslt_t rslt; + int nChars = 0; + if (ptr != NULL) + { + for (; nChars < len; ++ptr) + { + rslt = cy_retarget_io_getchar(ptr); + if (rslt == CY_RSLT_SUCCESS) + { + ++nChars; + if ((*ptr == '\n') || (*ptr == '\r')) + { + break; + } + } + else + { + break; + } + } + } + return (nChars); +} + + +#endif // if defined(__ARMCC_VERSION) + +#if defined(__ARMCC_VERSION) // ARM-MDK +// Include _sys_* prototypes provided by ARM Compiler runtime library + #include + +// Prevent linkage of library functions that use semihosting calls +__asm(".global __use_no_semihosting\n\t"); + +// Enable the linker to select an optimized library that does not include code to handle input +// arguments to main() +__asm(".global __ARM_use_no_argv\n\t"); + +//-------------------------------------------------------------------------------------------------- +// _sys_open +// +// Open a file: dummy implementation. +// Everything goes to the same output, no need to translate the file names +// (__stdin_name/__stdout_name/__stderr_name) to descriptor numbers +//-------------------------------------------------------------------------------------------------- +FILEHANDLE __attribute__((weak)) _sys_open(const char* name, int openmode) +{ + (void)name; + (void)openmode; + return 1; +} + + +//-------------------------------------------------------------------------------------------------- +// _sys_close +// +// Close a file: dummy implementation. +//-------------------------------------------------------------------------------------------------- +int __attribute__((weak)) _sys_close(FILEHANDLE fh) +{ + (void)fh; + return 0; +} + + +//-------------------------------------------------------------------------------------------------- +// _sys_write +// +// Write to a file: dummy implementation. +// The low-level function fputc retargets output to use UART TX +//-------------------------------------------------------------------------------------------------- +int __attribute__((weak)) _sys_write(FILEHANDLE fh, const unsigned char* buf, unsigned len, + int mode) +{ + (void)fh; + (void)buf; + (void)len; + (void)mode; + return 0; +} + + +//-------------------------------------------------------------------------------------------------- +// _sys_read +// +// Read from a file: dummy implementation. +// The low-level function fputc retargets input to use UART RX +//-------------------------------------------------------------------------------------------------- +int __attribute__((weak)) _sys_read(FILEHANDLE fh, unsigned char* buf, unsigned len, int mode) +{ + (void)fh; + (void)buf; + (void)len; + (void)mode; + return -1; +} + + +//-------------------------------------------------------------------------------------------------- +// _ttywrch +// +// Write a character to the output channel: dummy implementation. +//-------------------------------------------------------------------------------------------------- +void __attribute__((weak)) _ttywrch(int ch) +{ + (void)ch; +} + + +//-------------------------------------------------------------------------------------------------- +// _sys_istty +// +// Check if the file is connected to a terminal: dummy implementation +//-------------------------------------------------------------------------------------------------- +int __attribute__((weak)) _sys_istty(FILEHANDLE fh) +{ + (void)fh; + return 0; +} + + +//-------------------------------------------------------------------------------------------------- +// _sys_seek +// +// Move the file position to a given offset: dummy implementation +//-------------------------------------------------------------------------------------------------- +int __attribute__((weak)) _sys_seek(FILEHANDLE fh, long pos) +{ + (void)fh; + (void)pos; + return -1; +} + + +//-------------------------------------------------------------------------------------------------- +// _sys_flen +// Return the current length of a file: dummy implementation +//-------------------------------------------------------------------------------------------------- +long __attribute__((weak)) _sys_flen(FILEHANDLE fh) +{ + (void)fh; + return 0; +} + + +//-------------------------------------------------------------------------------------------------- +// _sys_exit +// +// Terminate the program: dummy implementation +//-------------------------------------------------------------------------------------------------- +void __attribute__((weak)) _sys_exit(int returncode) +{ + (void)returncode; + for (;;) + { + // Halt here forever + } +} + + +//-------------------------------------------------------------------------------------------------- +// _sys_command_string +// +// Return a pointer to the command line: dummy implementation +//-------------------------------------------------------------------------------------------------- +char __attribute__((weak)) *_sys_command_string(char* cmd, int len) +{ + (void)cmd; + (void)len; + return NULL; +} + + +#endif // ARM-MDK + +//-------------------------------------------------------------------------------------------------- +// cy_retarget_io_init +//-------------------------------------------------------------------------------------------------- +cy_rslt_t cy_retarget_io_init(cyhal_gpio_t tx, cyhal_gpio_t rx, uint32_t baudrate) +{ + const cyhal_uart_cfg_t uart_config = + { + .data_bits = 8, + .stop_bits = 1, + .parity = CYHAL_UART_PARITY_NONE, + .rx_buffer = NULL, + .rx_buffer_size = 0 + }; + + #if (CYHAL_API_VERSION >= 2) + cy_rslt_t result = + cyhal_uart_init(&cy_retarget_io_uart_obj, tx, rx, NC, NC, NULL, &uart_config); + #else // HAL API version 1 + cy_rslt_t result = cyhal_uart_init(&cy_retarget_io_uart_obj, tx, rx, NULL, &uart_config); + #endif + + if (result == CY_RSLT_SUCCESS) + { + result = cyhal_uart_set_baud(&cy_retarget_io_uart_obj, baudrate, NULL); + } + + if (result == CY_RSLT_SUCCESS) + { + result = cy_retarget_io_mutex_init(); + } + + return result; +} + + +//-------------------------------------------------------------------------------------------------- +// cy_retarget_io_is_tx_active +//-------------------------------------------------------------------------------------------------- +bool cy_retarget_io_is_tx_active() +{ + return cyhal_uart_is_tx_active(&cy_retarget_io_uart_obj); +} + + +//-------------------------------------------------------------------------------------------------- +// cy_retarget_io_deinit +//-------------------------------------------------------------------------------------------------- +void cy_retarget_io_deinit(void) +{ + // Since the largest hardware buffer would be 256 bytes + // it takes about 500 ms to transmit the 256 bytes at 9600 baud. + // Thus 1000 ms gives roughly 50% padding to this time. + int timeout_remaining_ms = 1000; + while (timeout_remaining_ms > 0) + { + if (!cy_retarget_io_is_tx_active()) + { + break; + } + cyhal_system_delay_ms(1); + timeout_remaining_ms--; + } + CY_ASSERT(timeout_remaining_ms != 0); + cyhal_uart_free(&cy_retarget_io_uart_obj); + cy_retarget_io_mutex_deinit(); +} + + +#if defined(__cplusplus) +} +#endif diff --git a/bsp/Infineon/libraries/IFX_PSOC6_HAL/retarget-io/cy_retarget_io.h b/bsp/Infineon/libraries/IFX_PSOC6_HAL/retarget-io/cy_retarget_io.h new file mode 100644 index 0000000000..7f51bf4a5b --- /dev/null +++ b/bsp/Infineon/libraries/IFX_PSOC6_HAL/retarget-io/cy_retarget_io.h @@ -0,0 +1,99 @@ +/***********************************************************************************************//** + * \file cy_retarget_io.h + * + * \brief + * Provides APIs for transmitting messages to or from the board via standard + * printf/scanf functions. Messages are transmitted over a UART connection which + * is generally connected to a host machine. Transmission is done at 115200 baud + * using the tx and rx pins provided by the user of this library. The UART + * instance is made available via cy_retarget_io_uart_obj in case any changes + * to the default configuration are desired. + * NOTE: If the application is built using newlib-nano, by default, floating + * point format strings (%f) are not supported. To enable this support you must + * add '-u _printf_float' to the linker command line. + * + *************************************************************************************************** + * \copyright + * Copyright 2018-2021 Cypress Semiconductor Corporation (an Infineon company) or + * an affiliate of Cypress Semiconductor Corporation + * + * SPDX-License-Identifier: Apache-2.0 + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + **************************************************************************************************/ + +/** + * \addtogroup group_board_libs Retarget IO + * \{ + */ + +#pragma once + +#include +#include "cy_result.h" +#include "cyhal_hw_types.h" + +#if defined(__cplusplus) +extern "C" { +#endif + +/** UART HAL object used by this library */ +extern cyhal_uart_t cy_retarget_io_uart_obj; + +/** UART baud rate */ +#define CY_RETARGET_IO_BAUDRATE (115200) + +#ifdef DOXYGEN + +/** Defining this macro enables conversion of line feed (LF) into carriage + * return followed by line feed (CR & LF) on the output direction (STDOUT). You + * can define this macro through the DEFINES variable in the application + * Makefile. + */ +#define CY_RETARGET_IO_CONVERT_LF_TO_CRLF + +#endif // DOXYGEN + +/** + * \brief Initialization function for redirecting low level IO commands to allow + * sending messages over a UART interface. This will setup the communication + * interface to allow using printf and related functions. + * + * In an RTOS environment, this function must be called after the RTOS has been + * initialized. + * + * \param tx UART TX pin + * \param rx UART RX pin + * \param baudrate UART baudrate + * \returns CY_RSLT_SUCCESS if successfully initialized, else an error about + * what went wrong + */ +cy_rslt_t cy_retarget_io_init(cyhal_gpio_t tx, cyhal_gpio_t rx, uint32_t baudrate); + +/** + * \brief Checks whether there is data waiting to be written to the serial console. + * \returns true if there are pending TX transactions, otherwise false + */ +bool cy_retarget_io_is_tx_active(); + +/** + * \brief Releases the UART interface allowing it to be used for other purposes. + * After calling this, printf and related functions will no longer work. + */ +void cy_retarget_io_deinit(void); + +#if defined(__cplusplus) +} +#endif + +/** \} group_board_libs */ diff --git a/bsp/Infineon/libraries/IFX_PSOC6_HAL/retarget-io/version.xml b/bsp/Infineon/libraries/IFX_PSOC6_HAL/retarget-io/version.xml new file mode 100644 index 0000000000..e2b767079e --- /dev/null +++ b/bsp/Infineon/libraries/IFX_PSOC6_HAL/retarget-io/version.xml @@ -0,0 +1 @@ +1.3.0.25183