yacwc

helpers_i2c.c

@@ -0,0 +1,32 @@
+
+#define TWI0_BAUD(F_SCL, T_RISE)    \
+    ((((((float)10000000 / (float)F_SCL)) - 10 - ((float)10000000 * T_RISE / 1000000))) / 2)
+
+#include "helpers_i2c.h"
+
+void i2c_init(void) {
+    PORTMUX.TWISPIROUTEA = 0x23; 
+    TWI0.CTRLA = 0x14;
+    
+    //Debug Run
+    TWI0.DBGCTRL = 0x00;
+    
+    //Master Baud Rate Control
+    TWI0.MBAUD = (uint8_t)TWI0_BAUD(100000, 0);
+    
+    //RIEN disabled; WIEN disabled; QCEN disabled; TIMEOUT DISABLED; SMEN disabled; ENABLE enabled; 
+    TWI0.MCTRLA = 0x01;
+    
+    //RIF disabled; WIF disabled; CLKHOLD disabled; ARBLOST disabled; BUSERR disabled; BUSSTATE UNKNOWN; 
+    TWI0.MSTATUS = 0x00;
+    
+    //Master Address
+    TWI0.MADDR = 0x00;
+    
+    //FLUSH disabled; ACKACT ACK; MCMD NOACT; 
+    TWI0.MCTRLB = 0x00;
+    
+    //Master Data
+    TWI0.MDATA = 0x00;
+    
+};