evk_uart.h

This module controls UART features of SPARK EVK board.

Copyright

Copyright (C) 2026 SPARK Microsystems International Inc. All rights reserved.

License

This source code is proprietary and subject to the SPARK Microsystems Software EULA found in this package in file EULA.txt.

Author

SPARK FW Team.

Functions

void evk_exp_uart_init(void)

Initialize the UART bus connected to the expansion board.

void evk_exp_lpuart_init(void)

Initialize the low power UART bus connected to the expansion board.

void evk_exp_lpuart_update_config(void)

Update the configuration of the low power UART, useful when clock changes.

void evk_uart_debug_read_blocking(uint8_t *data, uint16_t size, uint32_t timeout_ms)

Read data on the LPUART which is on the expansion board.

Parameters:

  • data – [in] Data buffer to write.

  • size – [in] Size of the data to write.

  • timeout_ms – [in] The amount of milliseconds before timeout.

void evk_uart_debug_write_blocking(uint8_t *data, uint16_t size, uint32_t timeout_ms)

Write data on the debug UART.

Parameters:

  • data – [in] Data buffer to write.

  • size – [in] Size of the data to write.

  • timeout_ms – [in] The amount of milliseconds before timeout.

void evk_uart_debug_write_non_blocking(uint8_t *data, uint16_t size)

Write data on the debug UART in non blocking mode.

Parameters:

  • data – [in] Data buffer to write.

  • size – [in] Size of the data to write.

void evk_uart_debug_read_byte_non_blocking(uint8_t *data)

Read byte on the debug UART in non blocking mode.

Parameters:

data – [in] Data byte to write.

void evk_uart_debug_set_tx_callback(void (*callback)(void))

Set the debug LPUART TX callback.

Parameters:

callback – [in] Pointer to the LPUART TX callback.

void evk_uart_debug_set_rx_callback(void (*callback)(void))

Set the debug LPUART RX callback.

Parameters:

callback – [in] Pointer to the LPUART RX callback.

void evk_uart_debug_dma_rx_enter_critical(void)

Disable debug UART DMA RX interrupt.

void evk_uart_debug_dma_rx_exit_critical(void)

Enable debug UART DMA RX interrupt.

void evk_uart_debug_stop_read_non_blocking(void)

Stop debug UART receive with DMA peripheral.

void evk_uart_exp_set_rx_callback(void (*callback)(void))

Set the expansion UART RX callback.

Parameters:

callback – [in] Pointer to the UART RX callback.

void evk_uart_exp_set_tx_callback(void (*callback)(void))

Set the expansion UART TX callback.

Parameters:

callback – [in] Pointer to the UART TX callback.

void evk_uart_exp_write_non_blocking_interrupt(uint8_t *data, uint16_t size)

Write data on the expansion UART in non blocking interrupt mode.

Parameters:

  • data – [in] Data buffer to write.

  • size – [in] Size of the data to write.

void evk_uart_exp_read_non_blocking_interrupt(uint8_t *data, uint16_t size)

Read data from the expansion UART in non blocking interrupt mode.

Parameters:

  • data – [in] Data buffer to read.

  • size – [in] Size of the data to read.