Upload retarget-io 1.2.0.21473

.cyignore

@@ -0,0 +1 @@
+docs

README.md

@@ -10,6 +10,9 @@ A utility library to retarget the standard input/output (STDIO) messages to a UA
 
 **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);`
@@ -32,4 +35,4 @@ If you want to use only '\\n' instead of "\r\n" for printing a new line using pr
 * [PSoC 6 Resources - KBA223067](https://community.cypress.com/docs/DOC-14644)
 
 ---
-© Cypress Semiconductor Corporation, 2019-2020.
+© Cypress Semiconductor Corporation, 2019-2021.

RELEASE.md

@@ -8,6 +8,10 @@ A utility library to retarget the standard input/output (STDIO) messages to a UA
 * Thread safe write for NewLib
 
 ### What Changed?
+#### 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
@@ -21,11 +25,13 @@ This version of the Retarget IO was validated for compatibility with the followi
 
 | Software and Tools                        | Version |
 | :---                                      | :----:  |
-| ModusToolbox Software Environment         | 2.0     |
-| GCC Compiler                              | 7.4     |
-| IAR Compiler                              | 8.32    |
+| ModusToolbox Software Environment         | 2.2.1   |
+| GCC Compiler                              | 9.3.1   |
+| IAR Compiler                              | 8.4     |
 | ARM Compiler 6                            | 6.11    |
 
+Minimum required ModusToolbox Software Environment: v2.0
+
 ### More information
 
 * [API Reference Guide](https://cypresssemiconductorco.github.io/retarget-io/html/index.html)
@@ -37,4 +43,4 @@ This version of the Retarget IO was validated for compatibility with the followi
 * [PSoC 6 Resources - KBA223067](https://community.cypress.com/docs/DOC-14644)
 
 ---
-© Cypress Semiconductor Corporation, 2019-2020.
+© Cypress Semiconductor Corporation, 2019-2021.