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SYS 4.0.

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NIIBE Yutaka
2019-05-10 09:59:57 +09:00
parent 3317fb39ab
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18
NEWS
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NEWS - Noteworthy changes
* Major changes in Chopstx 2.0
* Major changes in Chopstx 1.15
Released 2019-0X-XX
Released 2019-05-10
** SYS version 4.0
USB initialization/finalization demarcation has been changed.
Enabling/disabling USB module is done by USB driver. SYS routines
only handles USB cable config. If a board has a fixed pull-up
resistor, USB driver can omit calling
usb_lld_sys_init/usb_lld_sys_shutdown.
** USB driver change
Enabling/disabling USB module is done by USB driver. Only with
-DUSE_SYS option, it calls usb_lld_sys_init/usb_lld_sys_shutdown.
Don't forget having -DUSE_SYS to support boards with non-fixed 1K5
resistor. Despite this change, it should work well with SYS 3.0
routines.
** Cortex-M4 support
Cortex-M4 support has been added. Not supporting use of FPU or DSP,