Diff: AO19Lib/AO19_lib.cpp

Revision:

6:51f492ca61a2

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/AO19Lib/AO19_lib.cpp	Wed Oct 14 00:19:02 2020 +0000
@@ -0,0 +1,80 @@
+
+#include "mbed.h"
+#include "AO19_lib.h"
+
+// *****************************************************************************
+//   AO19_write_register(char, char, char)  writes single byte to AO19
+//                       char   I2C address
+//                       char   AO19 register address
+//                       char   data byte to be writen
+//   returns                    0 on success ACK, 1 on NACK 
+// *****************************************************************************
+
+int AO19_write_register(I2C *i2c, char I2C_add, char reg_add, char byte){
+    char data[2];               // char type ranges from 0 to 255 (8 bytes)
+    int error;
+    data[0] = reg_add;
+    data[1] = byte;
+    error = i2c->write(I2C_add,data,2);  
+    //if(DEBUG)db.printf("wr[%02X %02X %d]\r\n", data[0], data[1], error);
+    return error; 
+    
+}
+
+/// ****************************************************************************
+//   AO19_write_register(char, char, char *, int)  writes multiple bytes to AO19
+//                       char   I2C address
+//                       char   AO19 register address
+//                       char * data vector of bytes to be written
+//                       int    number of bytes to write
+//   returns                    0 on success ACK, 1 on NACK 
+// *****************************************************************************
+
+int AO19_write_register(I2C *i2c, char I2C_add, char reg_add, char *bytes, int n){
+    int i;   
+    //set start address
+    char data[16];
+    int error;                          
+    data[0] = reg_add; 
+    for(i=1;i<=n;i++){                   
+       data[i] = bytes[i-1];
+    }
+    error = i2c->write(I2C_add,data,n+1);  // send n bytes of data
+  
+    return error;      
+}
+
+// *****************************************************************************
+//   AO19_read_register(char, char, char *)  reads single byte from AO19
+//                       char   I2C address
+//                       char   AO19 register address
+//                       char * data vector for read bytes to be stored in 
+//   returns                    0 on success, 1 on fail 
+// *****************************************************************************
+
+int AO19_read_register(I2C *i2c, char I2C_add, char reg_add, char *bytes){
+    int error;
+    error = i2c->write(I2C_add,&reg_add,1,1); 
+    if(error)return error;   
+    error = i2c->read(I2C_add,bytes,1);  
+    //if(DEBUG)db.printf("rr e[%d]\r\n",error);
+    return error; 
+}
+
+// *****************************************************************************
+//   AO19_read_register(char, char, char *, int)  reads byte(s) from AO19
+//                       char   I2C address
+//                       char   OT07 register address
+//                       char * data vector for read bytes to be stored in 
+//                       int    number of bytes to read
+//   returns                    0 on success, 1 on fail 
+// *****************************************************************************
+
+int AO19_read_register(I2C *i2c, char I2C_add, char reg_add, char *bytes, int n){
+    int error;
+    error = i2c->write(I2C_add,&reg_add,1,1); 
+    if(error)return error;   
+    error = i2c->read(I2C_add,bytes,n);  
+    //if(DEBUG)db.printf("rr e[%d]\r\n",error);
+    return error; 
+}
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