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Change order of TX buffer fill to ensure in-order sending of frames. #153

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Merged
ackPeng merged 1 commit into from
Feb 6, 2025
Merged

Change order of TX buffer fill to ensure in-order sending of frames. #153

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2 changes: 1 addition & 1 deletion src/mcp2515_can.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1032,7 +1032,7 @@ byte mcp2515_can::mcp2515_getNextFreeTXBuf(byte* txbuf_n) { // get
}

// check all 3 TX-Buffers except reserved
for (i = 0; i < MCP_N_TXBUFFERS - nReservedTx; i++) {
for (i = MCP_N_TXBUFFERS - nReservedTx; i >= 0; i--) {
if ((status & txStatusPendingFlag(i)) == 0) {
*txbuf_n = txCtrlReg(i) + 1; // return SIDH-address of Buffer
mcp2515_modifyRegister(MCP_CANINTF, txIfFlag(i), 0);
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