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https://github.com/isometimes/rpi4-osdev
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Added some clocking to Ethernet over SPI example
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parent
bbe5d156b7
commit
29b864719c
3 changed files with 27 additions and 23 deletions
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@ -158,30 +158,29 @@ void arp_test(void)
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debugcrlf();
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while (1) {
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if (!ENC_GetReceivedFrame(&handle)) {
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continue;
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}
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while (!(handle.interruptFlags & EIR_PKTIF)) ENC_IRQHandler(&handle);
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debugstr("Got one... ");
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ENC_GetReceivedFrame(&handle);
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uint16_t len = handle.RxFrameInfos.length;
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//uint16_t len = handle.RxFrameInfos.length;
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uint8_t *buffer = (uint8_t *)handle.RxFrameInfos.buffer;
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checkPacket = (ARP *)buffer;
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if (len > 0) {
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if (!memcmp(checkPacket->senderIP, routerIP, 4)) {
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// Success! We have found our router's MAC address
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if (!memcmp(checkPacket->senderIP, routerIP, 4)) {
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// Success! We have found our router's MAC address
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memcpy(routerMAC, checkPacket->senderMAC, 6);
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debugstr("Router MAC is ");
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debughex(routerMAC[0]);
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debughex(routerMAC[1]);
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debughex(routerMAC[2]);
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debughex(routerMAC[3]);
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debughex(routerMAC[4]);
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debughex(routerMAC[5]);
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debugcrlf();
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memcpy(routerMAC, checkPacket->senderMAC, 6);
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debugstr("Router MAC is ");
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debughex(routerMAC[0]);
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debughex(routerMAC[1]);
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debughex(routerMAC[2]);
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debughex(routerMAC[3]);
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debughex(routerMAC[4]);
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debughex(routerMAC[5]);
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debugcrlf();
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break;
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}
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break;
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}
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}
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}
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@ -191,11 +190,7 @@ void init_network(void)
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handle.Init.DuplexMode = ETH_MODE_HALFDUPLEX;
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handle.Init.MACAddr = myMAC;
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handle.Init.ChecksumMode = ETH_CHECKSUM_BY_HARDWARE;
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handle.Init.InterruptEnableBits = EIE_LINKIE;
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debugstr("Setting MAC address to C0:FF:EE:C0:FF:EE.");
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debugcrlf();
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ENC_SetMacAddr(&handle);
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handle.Init.InterruptEnableBits = EIE_LINKIE | EIE_PKTIE;
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debugstr("Starting network up.");
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debugcrlf();
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@ -46,6 +46,9 @@ void spi_init() {
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gpio_useAsAlt0(9); //MISO
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gpio_useAsAlt0(10); //MOSI
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gpio_useAsAlt0(11); //SCLK
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REGS_SPI0->cs = 0x30;
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REGS_SPI0->clock = 0x28; // 500Mhz / 40 = 12.5Mhz for ENC SPI
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}
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void spi_chip_select(unsigned char chip_select) {
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@ -847,6 +847,10 @@ bool ENC_Start(ENC_HandleTypeDef *handle)
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enc_wrbreg(handle, ENC_MAMXFLL, (CONFIG_NET_ETH_MTU+18) & 0xff);
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enc_wrbreg(handle, ENC_MAMXFLH, (CONFIG_NET_ETH_MTU+18) >> 8);
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/* Set the Mac Address */
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ENC_SetMacAddr(handle);
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/* Configure LEDs (No, just use the defaults for now) */
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/* enc_wrphy(priv, ENC_PHLCON, ??); */
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@ -927,6 +931,8 @@ void ENC_SetMacAddr(ENC_HandleTypeDef *handle)
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enc_wrbreg(handle, ENC_MAADR4, handle->Init.MACAddr[3]);
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enc_wrbreg(handle, ENC_MAADR5, handle->Init.MACAddr[4]);
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enc_wrbreg(handle, ENC_MAADR6, handle->Init.MACAddr[5]);
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enc_wrbreg(handle, ENC_ECOCON, 0x2 & 0x7); // 12.5Mhz
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}
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