SAM Sercom Usart driver with DMA quick start.
Copyright (c) 2014-2018 Microchip Technology Inc. and its subsidiaries.
#include <asf.h>
Macros | |
#define | BUFFER_LEN 8 |
[dma_resource] More... | |
Functions | |
static void | configure_dma_resource_rx (struct dma_resource *resource) |
[transfer_done_tx] More... | |
static void | configure_dma_resource_tx (struct dma_resource *resource) |
[setup_dma_transfer_rx_descriptor] More... | |
static void | configure_usart (void) |
[setup_dma_transfer_tx_descriptor] More... | |
int | main (void) |
[setup_usart] [setup] More... | |
static void | setup_transfer_descriptor_rx (DmacDescriptor *descriptor) |
[config_dma_resource_rx] More... | |
static void | setup_transfer_descriptor_tx (DmacDescriptor *descriptor) |
[config_dma_resource_tx] More... | |
static void | transfer_done_rx (struct dma_resource *const resource) |
[transfer_descriptor] More... | |
static void | transfer_done_tx (struct dma_resource *const resource) |
[transfer_done_rx] More... | |
Variables | |
DmacDescriptor example_descriptor_rx | SECTION_DMAC_DESCRIPTOR |
[usart_buffer] More... | |
static uint16_t | string [BUFFER_LEN] |
struct dma_resource | usart_dma_resource_rx |
[module_inst] More... | |
struct dma_resource | usart_dma_resource_tx |
struct usart_module | usart_instance |
[module_inst] More... | |
#define BUFFER_LEN 8 |
[usart_buffer]
Referenced by setup_transfer_descriptor_rx(), and setup_transfer_descriptor_tx().
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static |
[transfer_done_tx]
[config_dma_resource_rx]
[setup_rx_1]
[setup_rx_1]
[setup_rx_2]
[setup_rx_2]
[setup_rx_3]
[setup_rx_3]
[setup_rx_4]
[setup_rx_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().
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static |
[setup_dma_transfer_rx_descriptor]
[config_dma_resource_tx]
[setup_tx_1]
[setup_tx_1]
[setup_tx_2]
[setup_tx_2]
[setup_tx_3]
[setup_tx_3]
[setup_tx_4]
[setup_tx_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().
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static |
[setup_dma_transfer_tx_descriptor]
[setup_usart]
[setup_config]
[setup_config] [setup_config_defaults]
[setup_config_defaults]
[setup_change_config]
[setup_set_config]
[setup_set_config]
[setup_enable]
[setup_enable]
References usart_config::baudrate, usart_config::mux_setting, usart_config::pinmux_pad0, usart_config::pinmux_pad1, usart_config::pinmux_pad2, usart_config::pinmux_pad3, STATUS_OK, usart_enable(), usart_get_config_defaults(), usart_init(), and usart_instance.
int main | ( | void | ) |
[setup_usart] [setup]
[setup_init] [setup_usart]
[setup_usart]
[setup_dma_resource]
[setup_dma_resource]
[setup_transfer_descriptor]
[setup_transfer_descriptor]
[add_descriptor_to_resource]
[add_descriptor_to_resource]
[setup_callback_register]
[setup_callback_register]
[setup_enable_callback]
[setup_enable_callback] [setup_init]
[main] [main_1]
[main_1]
[endless_loop]
[endless_loop] [main]
References configure_dma_resource_rx(), configure_dma_resource_tx(), configure_usart(), dma_add_descriptor(), DMA_CALLBACK_TRANSFER_DONE, dma_enable_callback(), dma_register_callback(), dma_start_transfer_job(), setup_transfer_descriptor_rx(), setup_transfer_descriptor_tx(), system_init(), transfer_done_rx(), transfer_done_tx(), usart_dma_resource_rx, and usart_dma_resource_tx.
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static |
[config_dma_resource_rx]
[setup_dma_transfer_rx_descriptor]
[setup_rx_5]
[setup_rx_5]
[setup_rx_6]
[setup_rx_6]
[setup_rx_7]
[setup_rx_7]
[setup_rx_8]
[setup_rx_8]
References dma_descriptor_config::beat_size, dma_descriptor_config::block_transfer_count, BUFFER_LEN, dma_descriptor_config::destination_address, DMA_BEAT_SIZE_HWORD, dma_descriptor_create(), dma_descriptor_get_config_defaults(), dma_descriptor_config::source_address, dma_descriptor_config::src_increment_enable, and usart_instance.
Referenced by main().
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static |
[config_dma_resource_tx]
[setup_dma_transfer_tx_descriptor]
[setup_tx_5]
[setup_tx_5]
[setup_tx_6]
[setup_tx_6]
[setup_tx_7]
[setup_tx_7]
[setup_tx_8]
[setup_tx_8]
References dma_descriptor_config::beat_size, dma_descriptor_config::block_transfer_count, BUFFER_LEN, dma_descriptor_config::destination_address, DMA_BEAT_SIZE_HWORD, dma_descriptor_create(), dma_descriptor_get_config_defaults(), dma_descriptor_config::dst_increment_enable, dma_descriptor_config::source_address, and usart_instance.
Referenced by main().
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static |
[transfer_descriptor]
[setup] [transfer_done_rx]
References dma_start_transfer_job(), and usart_dma_resource_tx.
Referenced by main().
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static |
[transfer_done_rx]
[transfer_done_tx]
References dma_start_transfer_job(), and usart_dma_resource_rx.
Referenced by main().
DmacDescriptor example_descriptor_rx SECTION_DMAC_DESCRIPTOR |
[usart_buffer]
[transfer_descriptor]
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static |
struct dma_resource usart_dma_resource_rx |
struct dma_resource usart_dma_resource_tx |
Referenced by main(), and transfer_done_rx().
struct usart_module usart_instance |
[module_inst]