diff options
| author | Luke T. Shumaker <lukeshu@lukeshu.com> | 2025-03-04 00:18:23 -0700 |
|---|---|---|
| committer | Luke T. Shumaker <lukeshu@lukeshu.com> | 2025-03-04 00:18:23 -0700 |
| commit | 47cee5df1e5e63a8d0a5f1b634ac6d4e1ff00af7 (patch) | |
| tree | d72daabeedecbc397cdce739639f8cf2cb947685 /cmd/sbc_harness/main.c | |
| parent | 355d7a495b0ca1a622d600427a8c737f3207a803 (diff) | |
| parent | 3f49a57b99e7fe5aafa73e70ed146d98b1ae174c (diff) | |
Merge branch 'lukeshu/dma'
Diffstat (limited to 'cmd/sbc_harness/main.c')
| -rw-r--r-- | cmd/sbc_harness/main.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/cmd/sbc_harness/main.c b/cmd/sbc_harness/main.c index 6f1d0ca..c932ec0 100644 --- a/cmd/sbc_harness/main.c +++ b/cmd/sbc_harness/main.c @@ -168,11 +168,14 @@ COROUTINE init_cr(void *) { rp2040_hwspi_init(&globals.dev_spi, "W5500", RP2040_HWSPI_0, SPI_MODE_0, /* the W5500 supports mode 0 or mode 3 */ - 60*1000*1000, /* as close to the W5500's max rate of 80MHz as we can without hwspi borking */ - 16, /* PIN_MISO */ - 19, /* PIN_MOSI */ - 18, /* PIN_CLK */ - 17); /* PIN_CS */ + 42500000, /* min(w5500, hwspi); w5500=80MHz; hwspi=42.5MHz, see rp2040_hwspi.h for a comment about why this is so low */ + 30, /* W5500 datasheet says min(T_CS = SCSn High Time) = 30ns */ + 0, /* bogus write write data when doing a read */ + 16, /* PIN_MISO */ + 19, /* PIN_MOSI */ + 18, /* PIN_CLK */ + 17, /* PIN_CS */ + 0, 1, 2, 3); /* DMA channels */ w5500_init(&globals.dev_w5500, "W5500", lo_box_rp2040_hwspi_as_spi(&globals.dev_spi), 21, /* PIN_INTR */ |