fmc_adc: Add function to write/read a byte list to the FMC eeprom.

3fd85a76 · Matthieu Cattin · c934a3f0 · 3fd85a76
Commit 3fd85a76 authored May 22, 2012 by Matthieu Cattin
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Showing with 23 additions and 11 deletions

fmc_adc.py test/fmcadc100m14b4cha/python/fmc_adc.py +23 -11

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--- a/test/fmcadc100m14b4cha/python/fmc_adc.py
+++ b/test/fmcadc100m14b4cha/python/fmc_adc.py
@@ -328,20 +328,32 @@ class CFmcAdc100m:
        print '\nScanning FMC system I2C bus'
        return self.fmc_sys_i2c.scan()

-
-    ###########################################################################
-    ##########                  Code to review                       ##########
-
    # write to EEPROM on system i2c bus
-    def sys_i2c_eeprom_write(self, addr, data):
-        return self.eeprom_24aa64.wr_data(addr, data)
-
-    # read from  EEPROM on system i2c bus
+    def sys_i2c_eeprom_write(self, data):
+        try:
+            byte_to_write = len(data)
+            addr = 0
+            while byte_to_write:
+                if byte_to_write > 32:
+                    size = 32
+                else:
+                    size = byte_to_write
+                self.eeprom_24aa64.wr_page(addr,data[addr:(addr+size)])
+                byte_to_write -= size
+                addr += size
+                time.sleep(0.005) # have to wait between writes otherwise the eeprom gives NACK on the i2c bus
+        except Eeprom24AA64OperationError as e:
+            raise FmcAdc100mOperationError(e)
+
+    # read from EEPROM on system i2c bus
    def sys_i2c_eeprom_read(self, addr, size):
-        return self.eeprom_24aa64.rd_data(addr, size)
-
-    ###########################################################################
+        try:
+            return self.eeprom_24aa64.rd_seq(addr, size)
+        except Eeprom24AA64OperationError as e:
+            raise FmcAdc100mOperationError(e)

+    #======================================================================
+    # CSR and LTC217x

    # Set input range
    def set_input_range(self, channel, in_range):