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configs/flipnclick-sam3x: Update README and comments to discuss I2C access on all mikroBUS connectors.

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This commit is contained in:
Gregory Nutt 2018-01-25 13:33:09 -06:00
parent 483dfe80d9
commit 23c6debc63
2 changed files with 57 additions and 0 deletions
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28
configs/flipnclick-sam3x/README.txt
View File

@ -15,6 +15,7 @@ Contents
- Buttons and LEDs - Buttons and LEDs
- Serial Consoles - Serial Consoles
- SPI - SPI
- I2C
- Loading Code - Loading Code
- Flip&Click SAM3X-specific Configuration Options - Flip&Click SAM3X-specific Configuration Options
- Configurations - Configurations
@ -154,6 +155,33 @@ SPI
MISO SPI0_MISO PA25 MISO SPI0_MISO PA25 MISO SPI0_MISO PA25 MISO SPI0_MISO PA25
MOSI SPI0_MOSI PA26 MOSI SPI0_MOSI PA26 MOSI SPI0_MOSI PA26 MOSI SPI0_MOSI PA26
I2C
===
I2C0 is available on pins D16-D17 of the Arduino Shield connectors where
you would expect then. The SPI connector is configured as follows:
Pin Label J1 Board Signal SAM3X
--- ----- -- ------------ -----
D16 SCL1 8 I2C0_SCL PA17
D17 SDA1 7 I2C0_SDA PA18
I2C0 and I2C1 are also available on the mikroBUS Click connectors (in
addition to 5V and GND). The connectors A and B share I2C0 with the
Arduino shield connector. Connectors C and D both connect to I2C1:
MikroBUS A: MikroBUS B:
Pin Board Signal SAM3X Pin Board Signal SAM3X
---- ------------ ----- ---- ------------ -------
SCL I2C0_SCL PA17 SCL I2C0_SCL PA17
SDA I2C0_SDA PA1 SDA I2C0_SDA PA18
MikroBUS C: MikroBUS D:
Pin Board Signal SAM3X Pin Board Signal SAM3X
---- ------------ ----- ---- ------------ -------
SCL I2C1_SCL PB13 SCL I2C1_SCL PB13
SDA I2C1_SDA PB12 SDA I2C1_SDA PB12
Loading Code Loading Code
============ ============

29
configs/flipnclick-sam3x/include/board.h
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@ -295,4 +295,33 @@
#define GPIO_SPI0_SPCK GPIO_SPI0_SPCK_1 #define GPIO_SPI0_SPCK GPIO_SPI0_SPCK_1
/* I2C (aka TWI):
*
* I2C0 is available on pins D16-D17 of the Arduino Shield connectors where
* you would expect then. The SPI connector is configured as follows:
*
* Pin Label J1 Board Signal SAM3X
* --- ----- -- ------------ -----
* D16 SCL1 8 I2C0_SCL PA17
* D17 SDA1 7 I2C0_SDA PA18
*
* I2C0 and I2C1 are also available on the mikroBUS Click connectors (in
* addition to 5V and GND). The connectors A and B share I2C0 with the
* Arduino shield connector. Connectors C and D both connect to I2C1:
*
* MikroBUS A: MikroBUS B:
* Pin Board Signal SAM3X Pin Board Signal SAM3X
* ---- ------------ ----- ---- ------------ -------
* SCL I2C0_SCL PA18 SCL I2C0_SCL PA18
* SDA I2C0_SDA PA17 SDA I2C0_SDA PA17
*
* MikroBUS C: MikroBUS D:
* Pin Board Signal SAM3X Pin Board Signal SAM3X
* ---- ------------ ----- ---- ------------ -------
* SCL I2C1_SCL PB13 SCL I2C1_SCL PB13
* SDA I2C1_SDA PB12 SDA I2C1_SDA PB12
*
* There are no alternative pin selections for TWI0 and TWI1.
*/
#endif /* __CONFIGS_FLIPNCLICK_SAM3X_INCLUDE_BOARD_H */ #endif /* __CONFIGS_FLIPNCLICK_SAM3X_INCLUDE_BOARD_H */