for now we start with the dumb, slow gamma calculation

app_ledtile/src/led/ledprocess/ledprocess.h

@@ -41,6 +41,18 @@
 
 //#define PER_PIXEL_ADJUSTMENT
 
+/*
+ * Routine to add defaults values to the GAMMA LUT and the per pixel adjustement values, if configured.
+ * This routine is very slow due to the gamma calculation. And it should only be called from your applicaiton as last resort.
+ * Normally you would store tha gamma (and if configured the per pixel adjustements in flash). How this is handled in your application
+ * is part of the application.
+ */
+#ifdef __XC__
+void ledprocess_set_defaults();
+#else
+void ledprocess_set_defaults();
+#endif
+
 /*
  * COLOUR PROCESSING
  *
@@ -53,10 +65,8 @@
  * cOut - Streaming bidirectional pixel output
  */
 #ifdef __XC__
-void ledprocess_init();
 int ledprocess_commands(streaming chanend cLedCmd, streaming chanend cOut, int oeen);
 #else
-void ledprocess_init();
 int ledprocess_commands(unsigned cLedCmd, unsigned cOut, int oeen);
 #endif
 

app_ledtile/src/led/ledprocess/ledprocess.xc

@@ -13,21 +13,26 @@
  **/                                   
 #include <xs1.h>
 #include <xclib.h>
+#include <print.h>
 #include "led.h"
 #include "ledprocess.h"
-#include "print.h"
+#include "gamma_lut_builder.h"
 
 //8 bit color intensity adjustements
 unsigned char intensityadjust[3] = {0xFF, 0xFF, 0xFF};
 //16 bit gamma look up table
 unsigned short gammaLUT[3][256];
 
 #pragma unsafe arrays
-void ledprocess_init()
+void ledprocess_set_defaults()
 {
   // Init pixintensity
 	//TODO this is rubbish here. 1st it does not work 2nd this should be done in the aaplication or so, not the driver (see mbi5026)
 	//TODO may be this should be renamed to init-defaults and be a fall back if there is no applicaiton routine
+	//anyway we initialive the gamma lut for now
+	for (int c=0; c<3; c++) {
+		buildGammaLUT(gammaLUT[c]);
+	}
 #ifdef PER_PIXEL_ADJUSTMENT
   for (int i=0; i<(FRAME_HEIGHT*FRAME_WIDTH*3); i++)
   {

app_ledtile/src/main.xc

@@ -145,26 +145,30 @@ int main(void)
 
     //TODO we must find a way to select the correct led driver at startup - perhaps from flash??
     //this needs to be done so taht each led driver can define & use the pins it wants to use
+    on stdcore[0]: {
+    	//for now it is enough to get some default values
+    	ledprocess_set_defaults(); //TODO this should be part of the ethernet application (loading from flash, if not useful initialize)
 #if defined MBI5031
-    on stdcore[0]: leddrive_mbi5031(c_led_data_out, c_led_cmds_out, cWdog[0],
-        p_led_out_r0, p_led_out_g0, p_led_out_b0, p_led_out_g1, p_led_out_b1,
-        p_led_out_addr, p_led_out_clk , p_led_out_ltch, p_led_out_oe ,
-        b_led_clk, b_led_data, b_led_gsclk, b_ref);
+		leddrive_mbi5031(c_led_data_out, c_led_cmds_out, cWdog[0],
+			p_led_out_r0, p_led_out_g0, p_led_out_b0, p_led_out_g1, p_led_out_b1,
+			p_led_out_addr, p_led_out_clk , p_led_out_ltch, p_led_out_oe ,
+			b_led_clk, b_led_data, b_led_gsclk, b_ref);
 #elif defined MBI5030
-    on stdcore[0]: leddrive_mbi5030(
-       		c_led_data_out, c_led_cmds_out, cWdog[0],
-           p_led_out_r0, p_led_out_g0, p_led_out_b0,
-           p_led_out_r1, p_led_out_g1, p_led_out_b1,
-           p_led_out_addr, p_led_out_clk , p_led_out_ltch, p_led_out_oe ,
-           b_led_clk, b_led_data, b_led_gsclk, b_ref);
+		leddrive_mbi5030(
+				c_led_data_out, c_led_cmds_out, cWdog[0],
+			   p_led_out_r0, p_led_out_g0, p_led_out_b0,
+			   p_led_out_r1, p_led_out_g1, p_led_out_b1,
+			   p_led_out_addr, p_led_out_clk , p_led_out_ltch, p_led_out_oe ,
+			   b_led_clk, b_led_data, b_led_gsclk, b_ref);
 #elif defined MBI5026
-    on stdcore[0]: leddrive_mbi5026(
-          		c_led_data_out, c_led_cmds_out, cWdog[0],
-              p_led_out_r0, p_led_out_g0, p_led_out_b0,
-              p_led_out_r1, p_led_out_g1, p_led_out_b1,
-              p_led_out_addr, p_led_out_clk , p_led_out_ltch, p_led_out_oe ,
-              b_led_clk, b_led_data, b_led_gsclk, b_ref);
+		leddrive_mbi5026(
+					c_led_data_out, c_led_cmds_out, cWdog[0],
+				  p_led_out_r0, p_led_out_g0, p_led_out_b0,
+				  p_led_out_r1, p_led_out_g1, p_led_out_b1,
+				  p_led_out_addr, p_led_out_clk , p_led_out_ltch, p_led_out_oe ,
+				  b_led_clk, b_led_data, b_led_gsclk, b_ref);
 #endif
+    }
     //the interface to the flash memory for config data
     on stdcore[0]: spiFlash(cSpiFlash, p_flash_miso, p_flash_ss, p_flash_clk, p_flash_mosi, b_flash_clk, b_flash_data);