下行转发测试通过,差一个last设备启动上行
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@@ -48,20 +48,14 @@ void main()
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asm volatile (
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"1:\n"
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"beqz sp, 1b\n"
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"li ra, 1\n"
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"sub sp, sp, ra\n"
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"andi ra, sp, 0x04\n"
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"beqz ra, 1b\n"
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"andi sp, sp, 0xFB\n"
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);
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readDat = *cdr_0_rx_rxFifo;
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operator = (readDat >> 16) & 0xf;
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downRecvLen = readDat >> 24;
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asm volatile (
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"1:\n"
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"beqz sp, 1b\n"
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"addi sp, sp, -1\n"
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);
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downRecvLen = readDat >> 20;
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readDat = *cdr_0_rx_rxFifo;
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@@ -73,48 +67,51 @@ void main()
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//接收本地包
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for( uint8_t i = 0; i < 8/4; i++ ){
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asm volatile (
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"1:\n"
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"beqz sp, 1b\n"
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"addi sp, sp, -1\n"
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);
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asm volatile (
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"andi ra, sp, 0x08\n"
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"1:\n"
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"bnez ra, 1b\n" //error
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);
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readDat = *cdr_0_rx_rxFifo;
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}
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// 下行包头
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*cdr_0_tx_txLen = downRecvLen; //downSendLen + 8
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*cdr_0_tx_txFifo = (downSendLen << 24) |( 0 << 16) | 0;
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*cdr_0_tx_txFifo = (downSendLen << 20) |( 0 << 16) | 0;
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*cdr_0_tx_txFifo = 0;
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//下行负载
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for( uint16_t i = 0; i < (downSendLen >> 3); i++ ){ //一次传4byte
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asm volatile (
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"1:\n"
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"beqz sp, 1b\n"
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"addi sp, sp, -1\n"
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);
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*cdr_0_tx_txFifo = *cdr_0_rx_rxFifo; //接收即发送
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asm volatile (
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"lui t0, %hi(0x40000000)\n"
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);
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for( uint32_t i = 0; i < (downSendLen >> 2); i++ ){ //一次传4byte
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asm volatile (
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// "andi ra, sp, 0x08\n"
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// "1:\n"
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// "bnez ra, 1b\n" //error 速度不够,不再检查接收
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// "lui t0, %hi(0x40000000)\n"
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"lw t1, 0x1c(t0)\n"
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"sw t1, 0x08(t0)\n"
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// : : : "a0", "a1"
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);
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//*cdr_0_tx_txFifo = *cdr_0_rx_rxFifo; //接收即发送
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}
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//CRC
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asm volatile (
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"andi ra, sp, 0x08\n"
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"1:\n"
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"beqz sp, 1b\n"
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"addi sp, sp, -1\n"
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"bnez ra, 1b\n" //error
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);
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uint32_t crc = *cdr_0_rx_rxFifo; //CRC
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asm volatile ( //等待发送完成标志
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"1:\n"
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"andi ra, x4, 0x4\n"
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"beqz x4, 1b\n"
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);
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//等待接收完成标志
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asm volatile (
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"beqz sp, 2f\n"
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"1:"
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"j 1b\n"
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"2:\n"
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"1:\n"
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"andi ra, sp, 0x08\n"
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"beqz ra, 1b\n"
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"andi sp, sp, 0xF7\n"
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);
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@@ -123,48 +120,38 @@ void main()
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//接收第一个包
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asm volatile (
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"1:\n"
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"beqz sp, 1b\n"
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"addi sp, sp, -1\n"
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"andi ra, sp, 0x40\n"
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"beqz ra, 1b\n"
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"andi sp, sp, 0xBF\n"
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);
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readDat = *cdr_1_rx_rxFifo;
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operator = (readDat >> 16) & 0xf;
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upRecvLen = readDat >> 24;
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upRecvLen = readDat >> 20;
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totNum = slvNum + (upRecvLen >> 3) - 1;
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//接收第二个包
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asm volatile (
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"1:\n"
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"beqz sp, 1b\n"
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"addi sp, sp, -1\n"
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"andi ra, sp, 0x80\n"
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"1:\n"
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"bnez ra, 1b\n" //error
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);
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readDat = *cdr_1_rx_rxFifo;
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//发送上行包头
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*cdr_1_tx_txLen = upRecvLen + 16; //downSendLen + 8
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*cdr_1_tx_txFifo = ((upRecvLen + 8) << 24) |( 0 << 16) | 0;
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*cdr_1_tx_txFifo = ((upRecvLen + 8) << 20) |( 0 << 16) | 0;
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*cdr_1_tx_txFifo = 0;
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for( uint8_t i = 0; i < 8/4; i ++ ){
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*cdr_1_tx_txFifo = 0;
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}
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for( uint16_t i = 0; i < upRecvLen >> 3; i ++ ){ //一次传4byte
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for( uint16_t i = 0; i < upRecvLen >> 2; i ++ ){ //一次传4byte
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asm volatile (
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"andi ra, sp, 0x80\n"
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"1:\n"
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"andi ra, x4, 0x40\n"
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"beqz ra, 3f\n"
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"2:\n"
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"lui ra, %hi(0x40000000)\n"
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"lw ra, 0x80(ra)\n"
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"andi ra, ra, 0x20\n"
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"bnez ra, 2b\n"
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"3:\n"
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"beqz sp, 1b\n"
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"addi sp, sp, -1\n"
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"bnez ra, 1b\n" //error
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);
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*cdr_1_tx_txFifo = *cdr_1_rx_rxFifo; //接收即发送
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@@ -172,16 +159,18 @@ void main()
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//CRC
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asm volatile (
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"andi ra, sp, 0x80\n"
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"1:\n"
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"beqz sp, 1b\n"
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"addi sp, sp, -1\n"
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"bnez ra, 1b\n" //error
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);
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crc = *cdr_1_rx_rxFifo; //CRC
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//等待接收完成标志
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asm volatile (
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"beqz sp, 2f\n"
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"1:"
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"j 1b\n"
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"2:\n"
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"1:\n"
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"andi ra, sp, 0x80\n"
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"beqz ra, 1b\n"
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"andi sp, sp, 0x7F\n"
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);
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} else if ( operator == 1 ){
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