Preston Ernst / Mbed OS mirror_actuator_VT

-data logging revision

Dependencies:   FastPWM

sw_fifo.hpp@1:25a2b47ca291, 2021-08-05 (annotated)

Committer:
ernstpre
Date:
Thu Aug 05 08:27:51 2021 +0000
Revision:
1:25a2b47ca291
No changes, just redownloading for final check for documentation

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ernstpre 1:25a2b47ca291 1 #define FIFO_BUFFER_SIZE 128 // software buffer size (in bytes)
ernstpre 1:25a2b47ca291 2
ernstpre 1:25a2b47ca291 3 // UART data transmit function
ernstpre 1:25a2b47ca291 4 // - checks if there's room in the transmit sw buffer
ernstpre 1:25a2b47ca291 5 // - if there's room, it transfers data byte to sw buffer
ernstpre 1:25a2b47ca291 6 // - automatically handles "uart_tx_buffer_full_flag"
ernstpre 1:25a2b47ca291 7 // - sets the overflow flag upon software buffer overflow (doesn't overwrite existing data)
ernstpre 1:25a2b47ca291 8 // - if this is the first data byte in the buffer, it enables the "hw buffer empty" interrupt
ernstpre 1:25a2b47ca291 9 void uart_send_byte(uint8_t byte);
ernstpre 1:25a2b47ca291 10
ernstpre 1:25a2b47ca291 11
ernstpre 1:25a2b47ca291 12 // UART data receive function
ernstpre 1:25a2b47ca291 13 // - checks if data exists in the receive sw buffer
ernstpre 1:25a2b47ca291 14 // - if data exists, it returns the oldest element contained in the buffer
ernstpre 1:25a2b47ca291 15 // - automatically handles "uart_rx_buffer_full_flag"
ernstpre 1:25a2b47ca291 16 // - if no data exists, it clears the uart_rx_flag
ernstpre 1:25a2b47ca291 17 uint8_t uart_get_byte(void);
ernstpre 1:25a2b47ca291 18
ernstpre 1:25a2b47ca291 19 volatile extern uint8_t uart_rx_fifo_not_empty_flag; // this flag is automatically set and cleared by the software buffer
ernstpre 1:25a2b47ca291 20 volatile extern uint8_t uart_rx_fifo_full_flag; // this flag is automatically set and cleared by the software buffer
ernstpre 1:25a2b47ca291 21 volatile extern uint8_t uart_rx_fifo_ovf_flag; // this flag is not automatically cleared by the software buffer
ernstpre 1:25a2b47ca291 22 volatile extern uint8_t uart_tx_fifo_full_flag; // this flag is automatically set and cleared by the software buffer
ernstpre 1:25a2b47ca291 23 volatile extern uint8_t uart_tx_fifo_ovf_flag; // this flag is not automatically cleared by the software buffer
ernstpre 1:25a2b47ca291 24 volatile extern uint8_t uart_tx_fifo_not_empty_flag; // this flag is automatically set and cleared by the software buffer