85cbc7a96e
Add fundamental feature support for RP2040 PIO SPI peripherals. This commit implements synchronous transfer with 8-bit MSB format. Using PIO allows any GPIO pins to be assigned the roles of CS, CLK, MOSI, and MISO. Optional features not implemented yet: - Interrupt based transfer - DMA transfer - Slave mode - Varying word size - 3-wire SPI support - LSB-first Updated in response to review comments. Further updates from second round of review. Rename spi_pico_pio.c source to match zephyr/MAINTAINERS.yml Remove unnecessary initialization code. Resolve merge conflicts Signed-off-by: Steve Boylan <stephen.boylan@beechwoods.com> |
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| .. | ||
| arc | ||
| arm | ||
| arm64 | ||
| common | ||
| mips | ||
| nios2 | ||
| posix | ||
| riscv | ||
| shields | ||
| sparc | ||
| x86 | ||
| xtensa | ||
| CMakeLists.txt | ||
| deprecated.cmake | ||
| index.rst | ||
| Kconfig | ||