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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,60 @@ | ||
| --------------- | ||
| 1. Usage Notes | ||
| --------------- | ||
| 1.1. This sample project requires r_usb_basic v1.42 and r_usb_hcdc v1.42 as minimum version. | ||
| After project generation, please confirm it as following steps: | ||
| In Smart Configurator editor, go to Component tab | ||
| - If you see r_usb_basic and r_usb_hcdc configuration are blue and can see its settings, | ||
| it is okay, you don't need to do anything. | ||
| - If you see r_usb_basic and r_usb_hcdc configuration are grey off, | ||
| you can select grey component and click on the link to download missing module. | ||
| After downloading completed, click Generate Code button to generate code for it. | ||
|
|
||
| 1.2. For more information about how to use this sample project, | ||
| please refer to section 2.11 of r01an6455ej0200-rx-azure-rtos.pdf | ||
|
|
||
| 1.3. To keep 8 bytes size for double type | ||
| "-dbl_size=8" compiler build option is set as default for CC-RX project | ||
| Size of type 'double' is set to "64 bits" as default for IAR project | ||
| "-m64bit-doubles" build option is set as default for GCC project | ||
|
|
||
| 1.4. Please also take note that the sample project is verified with C project. | ||
| If you create new project with C++ option, please confirm its behavior by yourself. | ||
| For example, if you create project with C++ option and CC-RX compiler, you will need to add abort() function manually. | ||
|
|
||
| ------------------------ | ||
| 2. Caution / Known Issue | ||
| ------------------------ | ||
| 2.1. When using GCC compiler, in case you set Optimization level as Optimize size(-Os), please set the linker option not to remove unused sections as following | ||
| - in Project Explorer view, right-click on the project and select Properties | ||
| - on Properties dialog select C/C++ Build -> Settings -> Tool Settings tab -> Linker -> Other | ||
| - add "-Wl,--no-gc-sections" on User defined options | ||
| - click Apply and Close" button | ||
|
|
||
| 2.2. When using GCC compiler, the "_end" section in src/linker_script.ld should be at the end. However, the default linker script may not meet this order, so please check linker_script.ld and move the section below to the end if needed, and build project again | ||
| .bss : | ||
| { | ||
| _bss = .; | ||
| *(.bss) | ||
| *(.bss.**) | ||
| *(COMMON) | ||
| *(B) | ||
| *(B_1) | ||
| *(B_2) | ||
| _ebss = .; | ||
| _end = .; | ||
| } > RAM | ||
|
|
||
| 2.3. If you are using RSK board (RSK RX65N, RSK RX671), please do the pin assignment check for USB0_VBUSEN. | ||
| In Smart Configurator editor (<projectname>.scfg) | ||
| - go to Pins tab | ||
| - at Pin Function, select USB0 on the left panel | ||
| - on the right panel, check and change USB0_VBUSEN pin number if it is incorrect (there is a warning icon) | ||
|
|
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| This issue will be fixed at that next update of RSK board description file. | ||
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| 2.4 When using RX microcontrollers with DPFPU | ||
| Target projects (RX72N, RX671): | ||
| - Projects with the double precision floating point instruction generation option (CC-RX: -dpfpu, GCC: --mdfpu=64, IAR: --fpu=64) enabled on RXv3 core devices | ||
| Workaround: | ||
| - Call tx_thread_fpu_enable() at the beginning of every task. |
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