Commit Graph

9 Commits

Author SHA1 Message Date
George Oikonomou
cf1f722a93 Merge pull request #1045 from g-oikonomou/cc26xx/contrib/cc26xx-rf-wakeup
Fix "CC26xx delayed wakeup after RF TX" bug
2015-05-09 22:50:50 +01:00
George Oikonomou
33526be5ab Merge pull request #985 from g-oikonomou/cc26xx-minor-updates
Minor Updates to the CC26xx Port
2015-05-09 22:29:30 +01:00
George Oikonomou
c77cf4bb90 Fix BLE on/off check 2015-05-03 22:36:03 +01:00
George Oikonomou
f83c4e7286 Improve code style 2015-05-03 22:36:03 +01:00
George Oikonomou
0c827a9739 Fix typo in CC26xx WDT-related macros 2015-05-01 17:13:38 +01:00
George Oikonomou
5cbde8b19b Fix CC26xx RF delayed wakeup after TX bug 2015-05-01 15:26:57 +01:00
George Oikonomou
692d50d22f Don't reject frames with version==1 2015-04-14 12:58:49 +01:00
Benoît Thébaudeau
19fd7a3551 Use additive offsets
OR-ing an offset to a base address instead of adding it is dangerous
because it can only work if the base address is aligned enough for the
offset.

Moreover, if the base address or the offset has a value unknown at
compile time, then the assembly instructions dedicated to 'base +
offset' addressing on most CPUs can't be emitted by the compiler because
this would require the alignment of the base address against the offset
to be known in order to optimize 'base | offset' into 'base + offset'.
In that case, the compiler has to emit more instructions in order to
compute 'base | offset' on most CPUs, e.g. on ARM, which means larger
binary size and slower execution.

Hence, replace all occurrences of 'base | offset' with 'base + offset'.
This must become a coding rule.

Here are the results for the cc2538-demo example:
 - Compilation of uart_init():
    * before:
        REG(regs->base | UART_CC) = 0;
        200b78:	f446 637c 	orr.w	r3, r6, #4032	; 0xfc0
        200b7c:	f043 0308 	orr.w	r3, r3, #8
        200b80:	2200      	movs	r2, #0
        200b82:	601a      	str	r2, [r3, #0]

    * now:
        REG(regs->base + UART_CC) = 0;
        200b7a:	2300      	movs	r3, #0
        200b7c:	f8c4 3fc8 	str.w	r3, [r4, #4040]	; 0xfc8

 - Size of the .text section:
    * before:	0x4c7c
    * now:	0x4c28
    * saved:	84 bytes

Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau.dev@gmail.com>
2015-03-28 17:28:15 +01:00
Jonas Olsson
5e5e9b92fd Add CC26xx CPU files 2015-02-25 13:09:56 +01:00