From e7549b73920184b291c95604b216d44cab310e4f Mon Sep 17 00:00:00 2001
From: Florian Agbuya <fa@m-labs.ph>
Date: Thu, 29 Aug 2024 17:29:19 +0800
Subject: [PATCH] test write_ramp

---
 fast-servo/pyfastservo/dac.py | 38 +++++++++++++++++++++--------------
 1 file changed, 23 insertions(+), 15 deletions(-)

diff --git a/fast-servo/pyfastservo/dac.py b/fast-servo/pyfastservo/dac.py
index 617047f..e448ae0 100644
--- a/fast-servo/pyfastservo/dac.py
+++ b/fast-servo/pyfastservo/dac.py
@@ -124,6 +124,12 @@ def write_sample(channel, sample):
     for addr, value in zip(addresses, values):
         write_to_memory(addr, value)
 
+def write_ramp():
+    signal = [i for i in range(16384)]
+
+    for value in signal:
+        write_sample(0, value)
+
 
 def configure_ad9117():
     spi = spidev.SpiDev()
@@ -148,25 +154,27 @@ def configure_ad9117():
         power_down(1, False)
         manual_override(True)
 
-        # Write sample value 0x1FFF to both channels
-        sample_value = 0x1FFF
-        write_sample(0, sample_value)  # Write to channel 0
-        write_sample(1, sample_value)  # Write to channel 1
+        write_ramp()
 
-        print(f"Sample value 0x{sample_value:04X} written to both channels")
+        # # Write sample value 0x1FFF to both channels
+        # sample_value = 0x1FFF
+        # write_sample(0, sample_value)  # Write to channel 0
+        # write_sample(1, sample_value)  # Write to channel 1
 
-        # Read back the values from memory
-        ch0_high = read_from_memory(CH0_HIGH_WORD_ADDR, 1)[0]
-        ch0_low = read_from_memory(CH0_LOW_WORD_ADDR, 1)[0]
-        ch1_high = read_from_memory(CH1_HIGH_WORD_ADDR, 1)[0]
-        ch1_low = read_from_memory(CH1_LOW_WORD_ADDR, 1)[0]
+        # print(f"Sample value 0x{sample_value:04X} written to both channels")
 
-        # Reconstruct the 14-bit values
-        ch0_value = (ch0_high << 8) | ch0_low
-        ch1_value = (ch1_high << 8) | ch1_low
+        # # Read back the values from memory
+        # ch0_high = read_from_memory(CH0_HIGH_WORD_ADDR, 1)[0]
+        # ch0_low = read_from_memory(CH0_LOW_WORD_ADDR, 1)[0]
+        # ch1_high = read_from_memory(CH1_HIGH_WORD_ADDR, 1)[0]
+        # ch1_low = read_from_memory(CH1_LOW_WORD_ADDR, 1)[0]
 
-        print(f"Read back value for channel 0: 0x{ch0_value:04X}")
-        print(f"Read back value for channel 1: 0x{ch1_value:04X}")
+        # # Reconstruct the 14-bit values
+        # ch0_value = (ch0_high << 8) | ch0_low
+        # ch1_value = (ch1_high << 8) | ch1_low
+
+        # print(f"Read back value for channel 0: 0x{ch0_value:04X}")
+        # print(f"Read back value for channel 1: 0x{ch1_value:04X}")
 
         print("AD9117 configuration completed successfully")
         return True