_

README.md

@@ -12,7 +12,9 @@ fw for a ch32v203 node w/ w5500 ethernet
   - SPI DMA only works with [prescalers](https://git.hye.su/mira/ch32-node/src/branch/master/src/spi_dma.c#L140) 8 and 64?
   - Also, for some reason it needs a ~50ms delay before configuring w5500 when compiled **with** `-O0`, not needed with `-Os`...
 
-TODO: LA?...
+idk...  
+![systick_dma](notes/2024-10-14-182212_1566x610_scrot.png)
+
 
 ## ~~previous (DNS Processing)~~
 solved by [patching](https://git.hye.su/mira/ch32-node/commit/259d63197e06c1a92b979490d4cd8f0fdb98f8d0#diff-6ba50689ba55dac7cfe3e9b011e594098c931e21) the korean bloatlib (`dns_makequery` in DNS.c)

src/main.c

@@ -53,7 +53,7 @@ int main(void) {
   // TODO: enabling any kind of SysTick IRQ literally causes the socket to hang forever
   // with 1ms interval the hang is on DHCP_ACK, on check_DHCP_leasedIP -> sendto() ARP req
   // with 1s it happens somewhere on DNS req
-  init_systick();
+  // init_systick();
   tim2_init();
 
   // systick irq enable here would complete the DHCP configuration and hang on DNS..

src/spi_dma.c

@@ -137,7 +137,7 @@ void init_spidma(void) {
                 SPI_DataSize_8b |                  // 8-bit data frame format
                 SPI_CPOL_Low |                     // Clock polarity
                 SPI_CPHA_1Edge |                   // Clock phase
-                SPI_BaudRatePrescaler_8 |          // Baud rate prescaler
+                SPI_BaudRatePrescaler_64 |          // Baud rate prescaler
                 SPI_NSS_Soft;                      // Software NSS management
 
   // Enable TX and RX DMA