3 Commits

Author	SHA1	Message	Date
Olaf Flebbe	df0d0d29a4	ws2812: support thingplus-rp2040 board ... Added 125 MHz rp2040 timing Added unsafe.Pointer for pointer conversion	2022-05-28 10:22:26 +02:00
Ayke van Laethem	06e298c514	ws2812: write inline assembly using C instead of Go ... This is better for various reasons: * I don't like the inline assembly implementation in TinyGo. It kinda works, but it's hard to use correctly. * The Go version had a subtle bug: the i and value variables weren't marked as modified. The compiler produced correct code by chance. In GCC-style inline assembly, it's possible to correctly mark it as an input+output operand. * LLVM 14 has some changes to inline assembly that change how memory operands can be created. Instead of supporting that, I'd like to get rid of memory operands entirely (and possibly inline assembly in general). I did some light testing: the ARM assembly changed a bit but not in any way that should have a practical effect, and the RISC-V assembly didn't change at all.	2022-04-21 11:10:18 +02:00
Ayke van Laethem	94729a4f7d	ws2812: add support for RISC-V ... This commit adds support for two new chips using the RISC-V architecture: the FE310 (used in the HiFive 1) and the ESP32-C3 from Espressif.	2021-11-03 19:14:32 +01:00