basic socket interfaceethernet-shield

1 files changed, 51 insertions, 0 deletions

diff --git a/libraries/ethernet/w5100.cpp b/libraries/ethernet/w5100.cpp
new file mode 100644
index 0000000..8c6551d
--- /dev/null
+++ b/libraries/ethernet/w5100.cpp
@@ -0,0 +1,51 @@
+#include "wirish.h"
+#include "w5100.h"
+
+
+extern HardwareSPI spi;
+
+void w5100_init(k) {
+
+}
+
+void w5100_reset(void) {
+   w5100_write(MR, MR_RST);
+}
+
+void w5100_write_buf(uint16 addr, uint8 *buf, uint8 len) {
+   uint32 i;
+   for (i = 0; i < len; i++) {
+      w5100_write(addr + i, buf[i]);
+   }
+}
+
+void w5100_read_buf(uint16 addr, uint8 *buf, uint8 len) {
+   uint32 i;
+   for (i = 0; i < len; i++) {
+      buf[i] = w5100_read(addr + i);
+   }
+}
+
+uint8 w5100_send_cmd(uint8 opcode, uint16 addr, uint8 data) {
+   uint8 buf[4];
+   uint8 rc = 0;
+
+   buf[0] = opcode;
+   buf[1] = (addr >> 8);
+   buf[2] = (addr & 0xFF);
+   buf[3] = data;
+
+   digitalWrite(SS, LOW);
+   rc = spi.send(buf, 4);
+   digitalWrite(SS, HIGH);
+
+#ifdef SPI_DEBUG
+   if (opcode == OPCODE_WRITE) {
+      iprintf("\tWrite: 0x%04x = 0x%x\n", addr, data);
+   } else {
+      iprintf("\tRead: 0x%04x = 0x%x\n", addr, rc);
+   }
+#endif
+
+   return rc;
+}