[riot-notifications] [RIOT-OS/RIOT] stm32_common/stm32_mem_length: fix RAM_LEN for stm32l1xx-A/X cpu's (#11804)

Francisco notifications at github.com
Fri Jul 5 15:49:09 CEST 2019


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### Contribution description

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STM32L1 cpu's sometimes have a `-A/X` in the product name, this changes the amount of RAM on some of these boards. Currently some product names are incorrectly defined according to the specification, e.g: `lobaro-lorabox` `CPU_MODEL=stm32l151cb` when it is actually `stm32l151cb-a`, the first version having 16kB and the second 32 kB (NOTE: since in master the RAM for stm32l151cb is wrongly defined there isn't any functional problem, but incorrect definitions). The parsing script has been updated to include the suffix.

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Check STM32 documentation to verify the combinations:

https://www.st.com/en/microcontrollers-microprocessors/stm32l151-152.html
https://www.st.com/content/st_com/en/products/microcontrollers-microprocessors/stm32-32-bit-arm-cortex-mcus/stm32-ultra-low-power-mcus/stm32l1-series/stm32l100-value-line.html

To verify `RAM_LEN` you can change the `CPU_MODEL` variable while running:

```
CPU_MODEL=stm32l151cb_a RIOT_MAKEFILES_GLOBAL_POST="\$(RIOTBASE)/cpu/stm32_common/Makefile.include" make -C examples/hello-world/ info-stm32
```

This is just including the info-stm32 recipe while allowing to set the `CPU_MODEL` externally (just a bodged command to test). Then check the output is correct:

```
CPU: stm32l151cb_a
        Line: STM32L151xx
        Pin count:      48
        ROM size:       128K (131072 Bytes)
        RAM size:       32K
```
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Re-opened #11794 because I had mistakenly pushed to upstream.
You can view, comment on, or merge this pull request online at:

  https://github.com/RIOT-OS/RIOT/pull/11804

-- Commit Summary --

  * stm32_common/stm32_mem_length: fix RAM_LEN for stm32l1xx-A/X cpu's
  * boards/lobaro-lorabox: add -A suffix to CPU_MODEL

-- File Changes --

    M boards/lobaro-lorabox/Makefile.include (2)
    M cpu/stm32_common/stm32_mem_lengths.mk (25)

-- Patch Links --

https://github.com/RIOT-OS/RIOT/pull/11804.patch
https://github.com/RIOT-OS/RIOT/pull/11804.diff

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