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Last commit 20 Feb 2019 by 
mbed official
targets/hal/TARGET_Atmel/TARGET_SAM21/drivers/sercom/i2c/quick_start_slave/qs_i2c_slave_basic_use.h@592:a274ee790e56, 2015-07-17 (annotated)
- Committer:
- mbed_official
- Date:
- Fri Jul 17 09:15:10 2015 +0100
- Revision:
- 592:a274ee790e56
- Parent:
- 579:53297373a894
Synchronized with git revision e7144f83a8d75df80c4877936b6ffe552b0be9e6
Full URL: https://github.com/mbedmicro/mbed/commit/e7144f83a8d75df80c4877936b6ffe552b0be9e6/
More API implementation for SAMR21
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| mbed_official | 579:53297373a894 | 1 | /** |
| mbed_official | 579:53297373a894 | 2 | * \page asfdoc_sam0_sercom_i2c_slave_basic_use_case Quick Start Guide for SERCOM I2C Slave - Basic |
| mbed_official | 579:53297373a894 | 3 | * |
| mbed_official | 579:53297373a894 | 4 | * In this use case, the I<SUP>2</SUP>C will used and set up as follows: |
| mbed_official | 579:53297373a894 | 5 | * - Slave mode |
| mbed_official | 579:53297373a894 | 6 | * - 100KHz operation speed |
| mbed_official | 579:53297373a894 | 7 | * - Not operational in standby |
| mbed_official | 579:53297373a894 | 8 | * - 10000 packet timeout value |
| mbed_official | 579:53297373a894 | 9 | * |
| mbed_official | 579:53297373a894 | 10 | * \section asfdoc_sam0_sercom_i2c_slave_basic_use_case_prereq Prerequisites |
| mbed_official | 579:53297373a894 | 11 | * The device must be connected to an I<SUP>2</SUP>C master. |
| mbed_official | 579:53297373a894 | 12 | * |
| mbed_official | 579:53297373a894 | 13 | * \section asfdoc_sam0_sercom_i2c_slave_basic_use_case_setup_code Setup |
| mbed_official | 579:53297373a894 | 14 | * |
| mbed_official | 579:53297373a894 | 15 | * \subsection asfdoc_sam0_sercom_i2c_slave_basic_use_setup_code Code |
| mbed_official | 579:53297373a894 | 16 | * The following must be added to the user application: |
| mbed_official | 579:53297373a894 | 17 | * |
| mbed_official | 579:53297373a894 | 18 | * A sample buffer to write from, a sample buffer to read to and length of buffers: |
| mbed_official | 579:53297373a894 | 19 | * \snippet qs_i2c_slave_basic_use.c packet_data |
| mbed_official | 579:53297373a894 | 20 | * |
| mbed_official | 579:53297373a894 | 21 | * Address to respond to: |
| mbed_official | 579:53297373a894 | 22 | * \snippet qs_i2c_slave_basic_use.c address |
| mbed_official | 579:53297373a894 | 23 | * |
| mbed_official | 579:53297373a894 | 24 | * Globally accessible module structure: |
| mbed_official | 579:53297373a894 | 25 | * \snippet qs_i2c_slave_basic_use.c module |
| mbed_official | 579:53297373a894 | 26 | * |
| mbed_official | 579:53297373a894 | 27 | * Function for setting up the module: |
| mbed_official | 579:53297373a894 | 28 | * \snippet qs_i2c_slave_basic_use.c initialize_i2c |
| mbed_official | 579:53297373a894 | 29 | * |
| mbed_official | 579:53297373a894 | 30 | * Add to user application \c main(): |
| mbed_official | 579:53297373a894 | 31 | * \snippet qs_i2c_slave_basic_use.c run_initialize_i2c |
| mbed_official | 579:53297373a894 | 32 | * |
| mbed_official | 579:53297373a894 | 33 | * \subsection asfdoc_sam0_sercom_i2c_slave_basic_use_setup_workflow Workflow |
| mbed_official | 579:53297373a894 | 34 | * -# Configure and enable module. |
| mbed_official | 579:53297373a894 | 35 | * \snippet qs_i2c_slave_basic_use.c config |
| mbed_official | 579:53297373a894 | 36 | * -# Create and initialize configuration structure. |
| mbed_official | 579:53297373a894 | 37 | * \snippet qs_i2c_slave_basic_use.c init_conf |
| mbed_official | 579:53297373a894 | 38 | * -# Change address and address mode settings in the configuration. |
| mbed_official | 579:53297373a894 | 39 | * \snippet qs_i2c_slave_basic_use.c conf_changes |
| mbed_official | 579:53297373a894 | 40 | * -# Initialize the module with the set configurations. |
| mbed_official | 579:53297373a894 | 41 | * \snippet qs_i2c_slave_basic_use.c init_module |
| mbed_official | 579:53297373a894 | 42 | * -# Enable the module. |
| mbed_official | 579:53297373a894 | 43 | * \snippet qs_i2c_slave_basic_use.c enable_module |
| mbed_official | 579:53297373a894 | 44 | * -# Create variable to hold transfer direction. |
| mbed_official | 579:53297373a894 | 45 | * \snippet qs_i2c_slave_basic_use.c dir |
| mbed_official | 579:53297373a894 | 46 | * -# Create packet variable to transfer. |
| mbed_official | 579:53297373a894 | 47 | * \snippet qs_i2c_slave_basic_use.c pack |
| mbed_official | 579:53297373a894 | 48 | * |
| mbed_official | 579:53297373a894 | 49 | * \section asfdoc_sam0_sercom_i2c_slave_basic_use_implementation Implementation |
| mbed_official | 579:53297373a894 | 50 | * \subsection asfdoc_sam0_sercom_i2c_slave_basic_use_implementation_code Code |
| mbed_official | 579:53297373a894 | 51 | * Add to user application \c main(): |
| mbed_official | 579:53297373a894 | 52 | * \snippet qs_i2c_slave_basic_use.c while |
| mbed_official | 579:53297373a894 | 53 | * \subsection i2c_slave_basic_use_implementation_workflow Workflow |
| mbed_official | 579:53297373a894 | 54 | * -# Wait for start condition from master and get transfer direction. |
| mbed_official | 579:53297373a894 | 55 | * \snippet qs_i2c_slave_basic_use.c get_dir |
| mbed_official | 579:53297373a894 | 56 | * -# Depending on transfer direction, set up buffer to read to or write from, |
| mbed_official | 579:53297373a894 | 57 | * and write or read from master. |
| mbed_official | 579:53297373a894 | 58 | * \snippet qs_i2c_slave_basic_use.c transfer |
| mbed_official | 579:53297373a894 | 59 | */ |
| mbed_official | 579:53297373a894 | 60 | /** |
| mbed_official | 579:53297373a894 | 61 | * Support and FAQ: visit <a href="http://www.atmel.com/design-support/">Atmel Support</a> |
| mbed_official | 579:53297373a894 | 62 | */ |
| mbed_official | 579:53297373a894 | 63 | |
| mbed_official | 579:53297373a894 | 64 | #include <asf.h> |
| mbed_official | 579:53297373a894 | 65 | #include <conf_clocks.h> |
| mbed_official | 579:53297373a894 | 66 |
