This example application shows how to use the TWIHS peripheral in master mode to write
and read data.
Parent topic:Harmony 3 Peripheral Library Application Examples for SAMA5D2 Family
This example uses the TWIHS peripheral library to write data and read back from TWIHS
slave.
To clone or download this application from Github, go to the main page of this repository and then
click Clone button to clone this repository or download as zip file. This content
can also be downloaded using content manager by following these instructions.
Path of the application within the repository is
apps/twihs/slave/i2c_eeprom_emulation/firmware.
To build the application, refer to the following table and open the project using its
IDE.
Project Name | Description |
---|---|
sam_a5d2_curiosity.X | MPLABX project for SAMA5D29 Curiosity Development Board Kit |
To load the application binary onto the target device, we need to use at91bootstrap
loader. Refer to the at91bootstrap loader documentation for
details on how to configure, build and run bootstrap loader project and use it to
bootstrap the application binaries.
The following table shows the target hardware for the application projects.
Project Name | Description |
---|---|
sam_a5d2_curiosity.X | SAMA5D29 Curiosity Development Board Kit |
Hardware setup requires two boards, one acting as the TWIHS Master and the other as
the TWIHS Slave.
SETTING UP THE BOARD
Open the twihs_eeprom application from apps/twihs/master/twihs_eeprom/firmware and open the main.c file. Make sure the following macro is defined to false.
#define I2C_SLAVE_IS_ONBOARD_EEPROM false
Build the application using its IDE
Run application on TWIHS Slave board and then run the application on TWIHS Master board
The LED indicates the success or failure:
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