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set main clock for using UART at 921600 bps

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UART baud rate is main clock (MCK) divided by CR*16.
The MCK values are chosen >= 48 MHz and <= 64 MHz to have a near
integer value CR for a baud rate of 921600 bps.
The end MCK frequency between simtrace and qmod differ slightly
but are close to 58 MHz.

Change-Id: Iaa4a97fc68494c93b9d128503515d88049de506c
This commit is contained in:
Kévin Redon committed 2018-08-28 19:13:13 +02:00
1 parent e07640c35a
commit e2b0f971e5
5 files changed
+31 -25
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firmware/libboard/common/include/board_common.h
-2
View File
@@ -53,8 +53,6 @@
/** Core definition */
#define cortexm3
#define BOARD_MCK 48000000
#define PIO_LED_RED PIO_PA17
#define PIO_LED_GREEN PIO_PA18