update constants to measured reality. resistors in HF circuits are fun.

diff --git a/tos/platforms/eyesIFX/chips/tda5250/tda5250RegDefaultSettings.h b/tos/platforms/eyesIFX/chips/tda5250/tda5250RegDefaultSettings.h
index ab9712874c5fe45c1b68678fc44bdf6ef6f57630..13cb7d771b8e0720e69d249c42d98edcbdb6630b 100644 (file)
--- a/tos/platforms/eyesIFX/chips/tda5250/tda5250RegDefaultSettings.h
+++ b/tos/platforms/eyesIFX/chips/tda5250/tda5250RegDefaultSettings.h
@@ -53,14 +53,23 @@
 // shortest: low rx; low tx energy consumption (1m to 3m range)
 #define TABLE_TOP                                    0x84E8
 
-/** regulate distance using variable resistor */
-#define RF_DAMPING_0dB  255
-#define RF_DAMPING_5dB  248
-#define RF_DAMPING_10dB 245
-#define RF_DAMPING_15dB 241
-#define RF_DAMPING_20dB 239
+/** regulate distance using variable resistor, values for high tx power */
+#define RF_HITX_DAMPING_0dB  255
+#define RF_HITX_DAMPING_5dB  248
+#define RF_HITX_DAMPING_10dB 245
+#define RF_HITX_DAMPING_15dB 241
+#define RF_HITX_DAMPING_20dB 239
 
-#define INITIAL_RF_POWER RF_DAMPING_0dB
+/** regulate distance using variable resistor, values for low tx power */
+#define RF_LOTX_DAMPING_0dB  255
+#define RF_LOTX_DAMPING_5dB  90
+#define RF_LOTX_DAMPING_10dB 67
+#define RF_LOTX_DAMPING_15dB 50
+#define RF_LOTX_DAMPING_16dB 40
+#define RF_LOTX_DAMPING_17dB 30
+
+// choose one
+#define INITIAL_RF_POWER RF_HITX_DAMPING_0dB
 
 #define TDA5250_REG_DEFAULT_SETTING_CONFIG           FULL_RANGE
 #define TDA5250_REG_DEFAULT_SETTING_FSK              0x0A0C