56 lines
2.2 KiB
Markdown
56 lines
2.2 KiB
Markdown
# ch32-node fw
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fw for a ch32v203 node w/ w5500 ethernet
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## current
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### SysTick IRQ and DMA issue
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[Enabling](https://git.hye.su/mira/ch32-node/src/branch/master/src/main.c#L54) the SysTick IRQ leads to a permanent hang of the socket.
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- With a 1ms IRQ interval, the hang occurs at `DHCP_ACK` during the `check_DHCP_leasedIP` -> `sendto()` [ARP request](https://git.hye.su/mira/ch32-node/src/branch/master/lib/ioLibrary_Driver/socket.c#L563).
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- With a 100ms interval, the hang occurs during the DNS request.
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- With a 1s interval it works
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- [Disabling SPI DMA](https://git.hye.su/mira/ch32-node/src/branch/master/src/w5500.c#L62) solves it (just commenting out `reg_wizchip_spiburst_cbfunc`), so it's most likely DMA related?
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- SPI DMA only works with [prescalers](https://git.hye.su/mira/ch32-node/src/branch/master/src/spi_dma.c#L140) 8 and 64?
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- Also, for some reason it needs a ~50ms delay before configuring w5500 when compiled **with** `-O0`, not needed with `-Os`...
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TODO: LA?...
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## ~~previous (DNS Processing)~~
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solved by [patching](https://git.hye.su/mira/ch32-node/commit/259d63197e06c1a92b979490d4cd8f0fdb98f8d0#diff-6ba50689ba55dac7cfe3e9b011e594098c931e21) the korean bloatlib (`dns_makequery` in DNS.c)
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w/ ch32v003fun
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> Partial DNS message: `11 23 81 82 00 01 00 00 00 00 00 00 03 68 79 65 00 00 00 02 73`
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> **DNS_run() failed, res = 0**
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w/ WCH HAL (none-os).. I get a full response
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> Receive DNS message from 192.168.102.1(53). len = 56
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> Partial DNS message: `11 23 81 80 00 01 00 02 00 00 00 00 03 68 79 65 02 73 75 00 00 01 00 01 C0 0C 00 01 00 01 00 00 01 2C 00 04 68 15 33 7F C0 0C 00 01 00 01 00 00 01 2C 00 04 AC 43 B4 9A `
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> Result: 172.67.180.154
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`RCC_CTLR`, GPIO Registers, `SPIx_CTLR1` registers are identical
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## LA
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### ch32v003fun
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```
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00 00 34 11 27 01 00 00 01 00 00 00 00 00 00 03 68 79 65 00 00 00 02 73 75 00 00 00 00 01 00 01
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```
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- 32 bytes long
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- (Post `68 79 65`): `00 00 00 02 73 75 00 00 00 00 01 00 01`
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### none-os
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```
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00 00 34 11 27 01 00 00 01 00 00 00 00 00 00 03 68 79 65 02 73 75 00 00 01 00 01
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```
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- 27 bytes long
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- (Post `68 79 65`): `02 73 75 00 00 01 00 01`
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