Harry Ho
40a53cc0d6
* tx/rx: Rename wrap_addr to start_addr for clarity * Fix RX logic, when advancing the tail pointer, not retrieving the stored RX buffer start address but the default value instead * Fix TX logic, when advancing the head pointer for next transmission, not retrieving the stored TX buffer end address but the default value instead * Rename SPI-related const's to match the datasheet: RERXDATA→RRXDATA, WEGPDATA→WGPDATA * Remove useless const's for SRAM default addresses for TX buffer * Simplify code
87 lines
1.9 KiB
Rust
87 lines
1.9 KiB
Rust
use crate::RAW_FRAME_LENGTH_MAX;
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/// Struct for TX Buffer on the hardware
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/// TODO: Should be a singleton
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pub struct TxBuffer {
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start_addr: u16,
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// The following two fields are controlled by firmware
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next_addr: u16,
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tail_addr: u16
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}
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impl TxBuffer {
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pub fn new() -> Self {
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TxBuffer {
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start_addr: 0x0000,
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next_addr: 0x0001,
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tail_addr: 0x0000
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}
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}
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pub fn set_start_addr(&mut self, addr: u16) {
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self.start_addr = addr;
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}
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pub fn get_start_addr(& self) -> u16{
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self.start_addr
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}
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pub fn set_next_addr(&mut self, addr: u16) {
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self.next_addr = addr;
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}
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pub fn get_next_addr(& self) -> u16 {
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self.next_addr
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}
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pub fn set_tail_addr(&mut self, addr: u16) {
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self.tail_addr = addr;
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}
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pub fn get_tail_addr(& self) -> u16{
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self.tail_addr
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}
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}
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/// Struct for TX Packet
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/// TODO: Generalise MAC addresses
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pub struct TxPacket {
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frame: [u8; RAW_FRAME_LENGTH_MAX],
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frame_length: usize
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}
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impl TxPacket {
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pub fn new() -> Self {
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TxPacket {
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frame: [0; RAW_FRAME_LENGTH_MAX],
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frame_length: 0
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}
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}
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/// Currently, frame data is copied from an external buffer
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pub fn update_frame(&mut self, raw_frame: &[u8], raw_frame_length: usize) {
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self.frame_length = raw_frame_length;
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for i in 0..self.frame_length {
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self.frame[i] = raw_frame[i];
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}
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}
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pub fn write_frame_to(&self, frame: &mut [u8]) {
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for i in 0..self.frame_length {
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frame[i] = self.frame[i];
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}
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}
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pub fn get_frame_length(&self) -> usize {
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self.frame_length
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}
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pub fn get_frame(&self) -> &[u8] {
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&self.frame
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}
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pub fn get_mut_frame(&mut self) -> &mut [u8] {
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&mut self.frame
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}
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/// TODO: Mostly for debugging only?
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pub fn get_frame_byte(&self, i: usize) -> u8 {
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self.frame[i]
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}
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}
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