From 34301509c041e198c450112626ca19ab5f636c48 Mon Sep 17 00:00:00 2001
From: Sven Steudte <sven.steudte@gmail.com>
Date: Thu, 7 Sep 2017 20:11:59 +0200
Subject: [PATCH] Decreased uC speed, lowered mem for image thred, changed
 2GFSK to 2FSK modulation

---
 tracker/software/drivers/si4464.c | 11 ++++++++++-
 tracker/software/mcuconf.h        |  2 +-
 tracker/software/threads/image.c  |  2 +-
 3 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/tracker/software/drivers/si4464.c b/tracker/software/drivers/si4464.c
index 2317608..6bea80c 100644
--- a/tracker/software/drivers/si4464.c
+++ b/tracker/software/drivers/si4464.c
@@ -309,12 +309,21 @@ void setModem2GFSK(gfsk_conf_t* conf) {
 	Si4464_write(setup_data_rate, 7);
 
 	// Use 2GFSK from async GPIO1
-	uint8_t use_2gfsk[] = {0x11, 0x20, 0x01, 0x00, 0x23};
+	uint8_t use_2gfsk[] = {0x11, 0x20, 0x01, 0x00, 0x22};
 	Si4464_write(use_2gfsk, 5);
 
 	// transmit LSB first
 	uint8_t use_lsb_first[] = {0x11, 0x12, 0x01, 0x06, 0x01};
 	Si4464_write(use_lsb_first, 5);
+
+
+	// Set AFSK filter
+	/*uint8_t coeff[] = {0x67, 0x67, 0x67, 0x67, 0x67, 0x67, 0x67, 0x67, 0x67};
+	uint8_t i;
+	for(i=0; i<sizeof(coeff); i++) {
+		uint8_t msg[] = {0x11, 0x20, 0x01, 0x17-i, coeff[i]};
+		Si4464_write(msg, 5);
+	}*/
 }
 
 void setPowerLevel(int8_t level) {
diff --git a/tracker/software/mcuconf.h b/tracker/software/mcuconf.h
index c8fa091..9e47470 100644
--- a/tracker/software/mcuconf.h
+++ b/tracker/software/mcuconf.h
@@ -48,7 +48,7 @@
 #define STM32_PLLN_VALUE                    192
 #define STM32_PLLP_VALUE                    4
 #define STM32_PLLQ_VALUE                    4
-#define STM32_HPRE                          STM32_HPRE_DIV1
+#define STM32_HPRE                          STM32_HPRE_DIV2
 #define STM32_PPRE1                         STM32_PPRE1_DIV1
 #define STM32_PPRE2                         STM32_PPRE2_DIV1
 #define STM32_RTCSEL                        STM32_RTCSEL_LSI
diff --git a/tracker/software/threads/image.c b/tracker/software/threads/image.c
index 6a7be45..5d59ac9 100644
--- a/tracker/software/threads/image.c
+++ b/tracker/software/threads/image.c
@@ -534,7 +534,7 @@ void start_image_thread(module_conf_t *conf)
 	if(conf->init_delay) chThdSleepMilliseconds(conf->init_delay);
 	TRACE_INFO("IMG  > Startup image thread");
 	chsnprintf(conf->name, sizeof(conf->name), "IMG");
-	thread_t *th = chThdCreateFromHeap(NULL, THD_WORKING_AREA_SIZE(100*1024), "IMG", NORMALPRIO, imgThread, conf);
+	thread_t *th = chThdCreateFromHeap(NULL, THD_WORKING_AREA_SIZE(30*1024), "IMG", NORMALPRIO, imgThread, conf);
 	if(!th) {
 		// Print startup error, do not start watchdog for this thread
 		TRACE_ERROR("IMG  > Could not startup thread (not enough memory available)");