SAM SERCOM I2C Master with DMA Quick Start Guide.
Copyright (c) 2014-2018 Microchip Technology Inc. and its subsidiaries.
#include <asf.h>Macros | |
| #define | DATA_LENGTH 10 |
| [packet_data] More... | |
| #define | SLAVE_ADDRESS 0x12 |
| #define | TIMEOUT 1000 |
| [packet_data] More... | |
Functions | |
| static void | configure_dma_resource (struct dma_resource *resource) |
| [transfer_done] More... | |
| static void | configure_i2c_master (void) |
| [dev_i2c_inst] More... | |
| int | main (void) |
| [setup_dma_transfer_descriptor] More... | |
| static void | setup_dma_descriptor (DmacDescriptor *descriptor) |
| [config_dma_resource] More... | |
| static void | transfer_done (struct dma_resource *const resource) |
| [transfer_descriptor] More... | |
Variables | |
| static uint8_t | buffer [DATA_LENGTH] |
| struct dma_resource | example_resource |
| [initialize_i2c] More... | |
| struct i2c_master_module | i2c_master_instance |
| [timeout] More... | |
| DmacDescriptor example_descriptor | SECTION_DMAC_DESCRIPTOR |
| [transfer_done_flag] More... | |
| static volatile bool | transfer_is_done = false |
| [dma_resource] More... | |
| #define DATA_LENGTH 10 |
[packet_data]
Referenced by main(), and setup_dma_descriptor().
| #define SLAVE_ADDRESS 0x12 |
Referenced by main().
| #define TIMEOUT 1000 |
[packet_data]
[timeout]
|
static |
[transfer_done]
[config_dma_resource]
[dma_setup_1]
[dma_setup_1]
[dma_setup_2]
[dma_setup_2]
[dma_setup_3]
[dma_setup_3]
[dma_setup_4]
[dma_setup_4]
References dma_allocate(), dma_get_config_defaults(), DMA_TRIGGER_ACTION_BEAT, dma_resource_config::peripheral_trigger, and dma_resource_config::trigger_action.
Referenced by main().
|
static |
[dev_i2c_inst]
[initialize_i2c]
[init_conf]
[init_conf]
[conf_change]
[conf_change]
[init_module]
[init_module]
[enable_module]
[enable_module]
References i2c_master_config::buffer_timeout, i2c_master_enable(), i2c_master_get_config_defaults(), i2c_master_init(), i2c_master_instance, i2c_master_config::pinmux_pad0, and i2c_master_config::pinmux_pad1.
Referenced by main().
| int main | ( | void | ) |
[setup_dma_transfer_descriptor]
[init] [config_i2c]
[config_i2c]
[config_dma]
[config_dma] [init]
[main] [start_transfer_job]
[start_transfer_job]
[set_i2c_addr]
[set_i2c_addr]
[waiting_for_complete]
[waiting_for_complete]
[inf_loop]
[inf_loop] [main]
References configure_dma_resource(), configure_i2c_master(), DATA_LENGTH, dma_add_descriptor(), DMA_CALLBACK_TRANSFER_DONE, dma_enable_callback(), dma_register_callback(), dma_start_transfer_job(), example_resource, i2c_master_dma_set_transfer(), i2c_master_instance, I2C_TRANSFER_WRITE, setup_dma_descriptor(), SLAVE_ADDRESS, system_init(), transfer_done(), and transfer_is_done.
|
static |
[config_dma_resource]
[setup_dma_transfer_descriptor]
[dma_setup_5]
[dma_setup_5]
[dma_setup_6]
[dma_setup_6]
[dma_setup_7]
[dma_setup_7]
[dma_setup_8]
[dma_setup_8]
References dma_descriptor_config::beat_size, dma_descriptor_config::block_transfer_count, buffer, DATA_LENGTH, dma_descriptor_config::destination_address, DMA_BEAT_SIZE_BYTE, dma_descriptor_create(), dma_descriptor_get_config_defaults(), dma_descriptor_config::dst_increment_enable, i2c_master_instance, and dma_descriptor_config::source_address.
Referenced by main().
|
static |
[transfer_descriptor]
[transfer_done]
References transfer_is_done, and UNUSED.
Referenced by main().
|
static |
Referenced by setup_dma_descriptor().
| struct dma_resource example_resource |
| struct i2c_master_module i2c_master_instance |
[timeout]
[dev_i2c_inst]
| DmacDescriptor example_descriptor SECTION_DMAC_DESCRIPTOR |
[transfer_done_flag]
[transfer_descriptor]
1.8.5