--- src/config/config_clocks.h.orig	2020-11-17 23:35:01.389451806 +0100
+++ src/config/config_clocks.h	2020-11-17 23:35:23.279607582 +0100
@@ -1,4 +1,4 @@
 #define CONF_CLOCK_GCLK_0_RUN_IN_STANDBY false
-#define CONF_CLOCK_GCLK_0_CLOCK_SOURCE SYSTEM_CLOCK_SOURCE_DFLL
-#define CONF_CLOCK_GCLK_0_PRESCALER 6
+#define CONF_CLOCK_GCLK_0_CLOCK_SOURCE SYSTEM_CLOCK_SOURCE_OSC16M
+#define CONF_CLOCK_GCLK_0_PRESCALER 1
 #define CONF_CLOCK_GCLK_0_OUTPUT_ENABLE false

# Solve UART encoding corruption ## Problem environment When routing log output to the UART serial pins, the connection is decoded by the connecting device. ## Steps to reproduce 1. Program an EVK with the serial io (uart) demo 1. Program the same firmware to a sendcomm 1. Read text output from each device 1. Compare the decoded signals in TTY ## Expected result In each case, the decoded text is ASCII readable. ## Actual result Only the EVK device produces readable characters, while the sendcomm is corrupted. ## Workaround A Use the ASF SERCOM USART callback driver instead of Serial I/O. ## Workaround B ``` --- src/config/config_clocks.h.orig 2020-11-17 23:35:01.389451806 +0100 +++ src/config/config_clocks.h 2020-11-17 23:35:23.279607582 +0100 @@ -1,4 +1,4 @@ #define CONF_CLOCK_GCLK_0_RUN_IN_STANDBY false -#define CONF_CLOCK_GCLK_0_CLOCK_SOURCE SYSTEM_CLOCK_SOURCE_DFLL -#define CONF_CLOCK_GCLK_0_PRESCALER 6 +#define CONF_CLOCK_GCLK_0_CLOCK_SOURCE SYSTEM_CLOCK_SOURCE_OSC16M +#define CONF_CLOCK_GCLK_0_PRESCALER 1 #define CONF_CLOCK_GCLK_0_OUTPUT_ENABLE false ``` ## Severity level This is **high priority** because clear UART decoded text is mandatory.