Revision 28:e24b911ddd7c, committed 2016-08-18

Comitter:

Adrian Suciu

Date:

Thu Aug 18 15:14:12 2016 +0300

Parent:

27:3c32495708f4

Child:

29:c693bdaac786

Commit message:

Implemented basic daisychain support

Changed in this revision

--- a/libraries/AD5270/AD5270.cpp	Tue May 24 18:24:35 2016 +0200
+++ b/libraries/AD5270/AD5270.cpp	Thu Aug 18 15:14:12 2016 +0300
@@ -125,11 +125,11 @@
  * @param data - (optional)value for the requested command
  * @return response form the AD5270
  */
-uint16_t AD5270::write_cmd(uint8_t command, uint16_t data)
+uint16_t AD5270::write_cmd(uint8_t command, uint16_t data, bool toggle_cs)
 {
     /* build 16 bit data to be written - Command + Value */
     uint16_t ui16Command = ((command & 0x3C) << 8) | (data & 0x3FF);
-    return write_reg(ui16Command);
+    return write_reg(ui16Command, toggle_cs);
 }
 
 /**
@@ -164,16 +164,16 @@
  * @param data to be written
  * @return data returned by the AD5270
  */
-uint16_t AD5270::write_reg(uint16_t data)
+uint16_t AD5270::write_reg(uint16_t data, bool toggle_cs)
 {
     uint16_t result;
     uint8_t upper_byte = (data >> 8) & 0xFF;
     uint8_t lower_byte =  data & 0xFF;
     ad5270.format(8, _SPI_MODE);
-    cs = false;
+    cs = false & toggle_cs;
     result  = ((ad5270.write(upper_byte)) << 8);
     result |=   ad5270.write(lower_byte);
-    cs = true;
+    cs = true & toggle_cs;
     return result;
 }
 
@@ -279,5 +279,11 @@
     write_cmd(SW_SHUTDOWN, static_cast<uint8_t>(mode));
 }
 
+void AD5270::daisy_chain(uint8_t *buffer, uint8_t size)
+{
+    cs = 0;
+    for(int i = 0; i < size; i++)
+        buffer[i] = ad5270.write(buffer[i]);
+    cs = 1;
+}
 
-

--- a/libraries/AD5270/AD5270.h	Tue May 24 18:24:35 2016 +0200
+++ b/libraries/AD5270/AD5270.h	Thu Aug 18 15:14:12 2016 +0300
@@ -104,8 +104,8 @@
 
 
     /* Low level methods */
-    uint16_t write_cmd(uint8_t command, uint16_t data = 0x00);
-    uint16_t write_reg(uint16_t data);
+    uint16_t write_cmd(uint8_t command, uint16_t data = 0x00, bool toggle_cs = true);
+    uint16_t write_reg(uint16_t data, bool toggle_cs = true);
 
     /* Methods that deal with resistance in float format*/
     uint16_t calc_RDAC(float resistance);
@@ -120,6 +120,8 @@
     uint8_t read_50TP_last_address(void);
     uint16_t read_50TP_memory(uint8_t address);
 
+    void daisy_chain(uint8_t *buffer, uint8_t size);
+
     SPI ad5270;    ///< SPI instance of the AD5270
     DigitalOut cs; ///< DigitalOut instance for the chip select of the AD5270