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Makefile for newlib nano and new Trace peripheral explanied

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Màrius Montón 2019-09-25 09:04:44 +02:00
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README.md
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@ -63,6 +63,7 @@ Helper classes:
Current performance is about 1.500.000 instructions / sec in a Intel Core
i5-5200<span>@</span>2.2Ghz and about 3.000.000 instructions / sec in a Intel Core i7-8550U<span>@</span>1.8Ghz.
Trace perihperal creates a xterm window where it prints out all received data.
### Structure
![Modules' hierarchy](https://github.com/mariusmm/RISC-V-TLM/blob/master/doc/Hierarchy.png)
@ -72,7 +73,7 @@ i5-5200<span>@</span>2.2Ghz and about 3.000.000 instructions / sec in a Intel Co
| Base | Module | Description |
| ---- | :----: | ---- |
| 0x40000000 | Trace | Output data directly to stdout |
| 0x40000000 | Trace | Output data to xterm |
| 0x40004000 | Timer | LSB Timer |
| 0x40004004 | Timer | MSB Timer |
| 0x40004008 | Timer | MSB Timer Comparator |
@ -138,6 +139,11 @@ wait for long time ...
$ export PATH=$PATH:/opt/riscv/bin
~~~
In test/C/long_test/ example there is a Makefile that compiles a project with any .c files and links them against new-lib nano.
There is a Helper_functions.c file with defiitions of all missing functions needed by the library (**_read()**, **_close()**, **_fstat_r()**,
**_lseek_r()**, **_isatty_r()**, **_write()**). All of them are defined empty except **_write()** that is written to use the Trace perihperal.
The definition of the function **_write()** allows developer to use printf() as usual and the stdout will be redirected to the Trace perihperal.
## Docker container
There is a Docker container available with the latest release at https://hub.docker.com/r/mariusmm/riscv-tlm.