sergiotarxz/nuttx
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

SAMD20: Now runs, but no serial output

Browse Source
This commit is contained in:
Gregory Nutt 2014-02-17 14:21:22 -06:00
parent 77fff39077
commit aa3d338c0f
2 changed files with 14 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
configs/samd20-xplained/README.txt
View File

@ -405,12 +405,12 @@ Serial Consoles
SERCOM4 is available on connectors EXT1 and EXT3
PIN EXT1 EXT3 GPIO Function
---- ---- ------ -----------
13 PB09 PB13 SERCOM4 / USART RX
14 PB08 PB12 SERCOM4 / USART TX
19 19 GND
20 20 VCC
PIN EXT1 EXT3 GPIO Function
---- ---- ---- ------------------
13 PB09 PB13 SERCOM4 / USART RX
14 PB08 PB12 SERCOM4 / USART TX
19 19 GND
20 20 VCC
If you have a TTL to RS-232 converter then this is the most convenient
serial console to use. It is the default in all of these configurations.

15
configs/samd20-xplained/include/board.h
View File

@ -56,13 +56,14 @@
/* Clocking *************************************************************************/
/* Overview
*
* OSC8M Output = 8MHz
* `- GCLK1 Input = 8MHz Prescaler = 1 output = 8MHz
* `- DFLL Input = 8MHz Multiplier = 6 output = 48MHz
* `- PM Input = 48Mhz CPU divider = 1 CPU frequency = 48MHz
* APBA divider = 1 APBA frequency = 48MHz
* APBB divider = 1 APBB frequency = 48MHz
* APBC divider = 1 APBC frequency = 48MHz
* OSC8M Output = 8MHz
* `- GCLK1 Input = 8MHz Prescaler = 1 output = 8MHz
* `- DFLL Input = 8MHz Multiplier = 6 output = 48MHz
* `- GCLK0 Input = 48MHz Prescaler = 1 output = 48MHz
* `- PM Input = 48Mhz CPU divider = 1 CPU frequency = 48MHz
* APBA divider = 1 APBA frequency = 48MHz
* APBB divider = 1 APBB frequency = 48MHz
* APBC divider = 1 APBC frequency = 48MHz
*
* The SAMD20 Xplained Pro has one on-board crystal:
*