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Last commit 20 Feb 2019 by 
mbed official
targets/hal/TARGET_Atmel/TARGET_SAM21/drivers/sercom/i2c/quick_start_master/qs_i2c_master_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_master_basic_use_case Quick Start Guide for SERCOM I2C Master - 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 | * - Master 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 | * - 65535 unknown bus state timeout value |
| mbed_official | 579:53297373a894 | 10 | * |
| mbed_official | 579:53297373a894 | 11 | * |
| mbed_official | 579:53297373a894 | 12 | * \section asfdoc_sam0_sercom_i2c_master_basic_use_case_prereq Prerequisites |
| mbed_official | 579:53297373a894 | 13 | * The device must be connected to an I<SUP>2</SUP>C slave. |
| mbed_official | 579:53297373a894 | 14 | * |
| mbed_official | 579:53297373a894 | 15 | * \section asfdoc_sam0_sercom_i2c_master_basic_use_setup Setup |
| mbed_official | 579:53297373a894 | 16 | * |
| mbed_official | 579:53297373a894 | 17 | * \subsection asfdoc_sam0_sercom_i2c_master_basic_use_setup_code Code |
| mbed_official | 579:53297373a894 | 18 | * The following must be added to the user application: |
| mbed_official | 579:53297373a894 | 19 | * |
| mbed_official | 579:53297373a894 | 20 | * - A sample buffer to send, a sample buffer to read: |
| mbed_official | 579:53297373a894 | 21 | * \snippet qs_i2c_master_basic_use.c packet_data |
| mbed_official | 579:53297373a894 | 22 | * |
| mbed_official | 579:53297373a894 | 23 | * - Slave address to access: |
| mbed_official | 579:53297373a894 | 24 | * \snippet qs_i2c_master_basic_use.c address |
| mbed_official | 579:53297373a894 | 25 | * |
| mbed_official | 579:53297373a894 | 26 | * - Number of times to try to send packet if it fails: |
| mbed_official | 579:53297373a894 | 27 | * \snippet qs_i2c_master_basic_use.c timeout |
| mbed_official | 579:53297373a894 | 28 | * |
| mbed_official | 579:53297373a894 | 29 | * - Globally accessible module structure: |
| mbed_official | 579:53297373a894 | 30 | * \snippet qs_i2c_master_basic_use.c dev_inst |
| mbed_official | 579:53297373a894 | 31 | * |
| mbed_official | 579:53297373a894 | 32 | * - Function for setting up the module: |
| mbed_official | 579:53297373a894 | 33 | * \snippet qs_i2c_master_basic_use.c initialize_i2c |
| mbed_official | 579:53297373a894 | 34 | * |
| mbed_official | 579:53297373a894 | 35 | * - Add to user application \c main(): |
| mbed_official | 579:53297373a894 | 36 | * \snippet qs_i2c_master_basic_use.c init |
| mbed_official | 579:53297373a894 | 37 | * |
| mbed_official | 579:53297373a894 | 38 | * \subsection asfdoc_sam0_sercom_i2c_master_basic_use_setup_workflow Workflow |
| mbed_official | 579:53297373a894 | 39 | * -# Configure and enable module. |
| mbed_official | 579:53297373a894 | 40 | * \snippet qs_i2c_master_basic_use.c initialize_i2c |
| mbed_official | 579:53297373a894 | 41 | * -# Create and initialize configuration structure. |
| mbed_official | 579:53297373a894 | 42 | * \snippet qs_i2c_master_basic_use.c init_conf |
| mbed_official | 579:53297373a894 | 43 | * -# Change settings in the configuration. |
| mbed_official | 579:53297373a894 | 44 | * \snippet qs_i2c_master_basic_use.c conf_change |
| mbed_official | 579:53297373a894 | 45 | * -# Initialize the module with the set configurations. |
| mbed_official | 579:53297373a894 | 46 | * \snippet qs_i2c_master_basic_use.c init_module |
| mbed_official | 579:53297373a894 | 47 | * -# Enable the module. |
| mbed_official | 579:53297373a894 | 48 | * \snippet qs_i2c_master_basic_use.c enable_module |
| mbed_official | 579:53297373a894 | 49 | * -# Create a variable to see when we should stop trying to send packet. |
| mbed_official | 579:53297373a894 | 50 | * \snippet qs_i2c_master_basic_use.c timeout_counter |
| mbed_official | 579:53297373a894 | 51 | * -# Create a packet to send. |
| mbed_official | 579:53297373a894 | 52 | * \snippet qs_i2c_master_basic_use.c packet |
| mbed_official | 579:53297373a894 | 53 | * |
| mbed_official | 579:53297373a894 | 54 | * \section asfdoc_sam0_sercom_i2c_master_basic_use_implemenation Implementation |
| mbed_official | 579:53297373a894 | 55 | * \subsection asfdoc_sam0_sercom_i2c_master_basic_use_implemenation_code Code |
| mbed_official | 579:53297373a894 | 56 | * Add to user application \c main(): |
| mbed_official | 579:53297373a894 | 57 | * \snippet qs_i2c_master_basic_use.c main |
| mbed_official | 579:53297373a894 | 58 | * |
| mbed_official | 579:53297373a894 | 59 | * \subsection asfdoc_sam0_sercom_i2c_master_basic_use_implemenation_workflow Workflow |
| mbed_official | 579:53297373a894 | 60 | * -# Write packet to slave. |
| mbed_official | 579:53297373a894 | 61 | * \snippet qs_i2c_master_basic_use.c write_packet |
| mbed_official | 579:53297373a894 | 62 | * The module will try to send the packet TIMEOUT number of times or until it is |
| mbed_official | 579:53297373a894 | 63 | * successfully sent. |
| mbed_official | 579:53297373a894 | 64 | * -# Read packet from slave. |
| mbed_official | 579:53297373a894 | 65 | * \snippet qs_i2c_master_basic_use.c read_packet |
| mbed_official | 579:53297373a894 | 66 | * The module will try to read the packet TIMEOUT number of times or until it is |
| mbed_official | 579:53297373a894 | 67 | * successfully read. |
| mbed_official | 579:53297373a894 | 68 | */ |
| mbed_official | 579:53297373a894 | 69 | /** |
| mbed_official | 579:53297373a894 | 70 | * Support and FAQ: visit <a href="http://www.atmel.com/design-support/">Atmel Support</a> |
| mbed_official | 579:53297373a894 | 71 | */ |
| mbed_official | 579:53297373a894 | 72 | |
| mbed_official | 579:53297373a894 | 73 | #include <asf.h> |
| mbed_official | 579:53297373a894 | 74 | #include <conf_clocks.h> |
| mbed_official | 579:53297373a894 | 75 |
