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暂时屏蔽了fsmc两个诊断宏，便于调试；增加汇编代码，已经看到Tx0作为下行输出的波形了

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This commit is contained in:
bacon
2025-02-09 20:08:14 +08:00
parent 6e72db048a
commit fd74e07123
4 changed files with 36 additions and 75 deletions
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101
tb/sw/src/mstSvr.S
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@@ -34,6 +34,7 @@ x31, 最大的服务中断号
#define REG_min_isr_num x30
#define REG_max_isr_num x31
#define REG_4 x23
.globl _prog_start
.globl _rv32i_plic_handle
@@ -60,71 +61,21 @@ _prog_start:
init_system_func:
mv REG_plic_claim, a1 # plic_claim
/*初始化isr_hdl_table，中断表*/
la x16, isr_hdl_table
la x17, isr_tx0_end_hdl
addi x16, x16, 4
sw x17, 0(x16)
la x17, isr_tx1_end_hdl
addi x16, x16, 4
sw x17, 0(x16)
la x17, isr_rx0_err_hdl
addi x16, x16, 4
sw x17, 0(x16)
la x17, isr_rx1_err_hdl
addi x16, x16, 4
sw x17, 0(x16)
la x17, isr_rx0_start_hdl
addi x16, x16, 4
sw x17, 0(x16)
la x17, isr_rx1_start_hdl
addi x16, x16, 4
sw x17, 0(x16)
la x17, isr_rx0_end_hdl
addi x16, x16, 4
sw x17, 0(x16)
la x17, isr_rx1_end_hdl
addi x16, x16, 4
sw x17, 0(x16)
la x17, isr_tx0_deq_hdl
addi x16, x16, 4
sw x17, 0(x16)
la x17, isr_tx1_deq_hdl
addi x16, x16, 4
sw x17, 0(x16)
la x17, isr_rx0_enq_hdl
addi x16, x16, 4
sw x17, 0(x16)
la x17, isr_rx1_enq_hdl
addi x16, x16, 4
sw x17, 0(x16)
la x17, _rv32i_plic_handle
mv a0, x17
li REG_TL2CDR_BASE, TL2CDR_BASE
la REG_ISR_ADDR, isr_hdl_table
li REG_min_isr_num, 14
li REG_max_isr_num, 25
li x23, 4
li REG_4, 4
ret
//主站启动发送数据
//a1, 当前需要发送的数据的地址
//a2, 当前数据发送的长度
//a3, dummy
//a4, dummy
send_data_func:
mv REG_tx_data, a1
mv REG_tx_data_len, a2
@@ -139,12 +90,11 @@ send_data_func:
sw x17, TX0_WriteTxFifo(REG_TL2CDR_BASE)
//*tx0_txFifo = data[0]
lw x17, 0(REG_tx_data)
sw x17, TX0_WriteTxFifo(REG_TL2CDR_BASE)
#lw x17, 0(REG_tx_data)
#sw x17, TX0_WriteTxFifo(REG_TL2CDR_BASE)
//li x16, 4
add REG_tx_data, REG_tx_data, x23
sub REG_tx_data_len, REG_tx_data_len, x23
#add REG_tx_data, REG_tx_data, REG_4
#sub REG_tx_data_len, REG_tx_data_len, REG_4
li a0, 1
ret
@@ -175,9 +125,13 @@ exit_handle:
mret
isr_tx0_end_hdl:
#li x17, 1
#sw x17, TX0_WriteSoftReset(REG_TL2CDR_BASE)
mret
isr_tx1_end_hdl:
#li x17, 1
#sw x17, TX0_WriteSoftReset(REG_TL2CDR_BASE)
mret
isr_rx0_err_hdl:
@@ -192,7 +146,7 @@ isr_rx0_start_hdl:
isr_rx1_start_hdl:
lw x22, RX1_ReadRxLen(REG_TL2CDR_BASE)
sw x22, 0(REG_rx_data)
add REG_rx_data, REG_rx_data, x23
add REG_rx_data, REG_rx_data, REG_4
mret
isr_rx0_end_hdl:
@@ -202,13 +156,12 @@ isr_rx1_end_hdl:
mret
isr_tx0_deq_hdl:
bgtz REG_tx_data_len, 1f //if (REG_tx_data_len > 0)
beqz REG_tx_data_len, 1f //if (REG_tx_data_len > 0)
lw x17, 0(REG_tx_data)
sw x17, TX0_WriteTxFifo(REG_TL2CDR_BASE)
//li x16, 4
add REG_tx_data, REG_tx_data, x23
sub REG_tx_data_len, REG_tx_data_len, x23
add REG_tx_data, REG_tx_data, REG_4
sub REG_tx_data_len, REG_tx_data_len, REG_4
1:
mret
@@ -216,16 +169,24 @@ isr_tx1_deq_hdl:
mret
isr_rx0_enq_hdl:
lw x17, RX1_ReadRxFifo(REG_TL2CDR_BASE)
sw x17, 0(REG_rx_data)
add REG_rx_data, REG_rx_data, x23
mret
isr_rx1_enq_hdl:
lw x17, RX1_ReadRxFifo(REG_TL2CDR_BASE)
sw x17, 0(REG_rx_data)
add REG_rx_data, REG_rx_data, REG_4
mret
.balign 4
isr_hdl_table:
.space 64
nop
j isr_tx0_end_hdl
j isr_tx1_end_hdl
j isr_rx0_err_hdl
j isr_rx1_err_hdl
j isr_rx0_start_hdl
j isr_rx1_start_hdl
j isr_rx0_end_hdl
j isr_rx1_end_hdl
j isr_tx0_deq_hdl
j isr_tx1_deq_hdl
j isr_rx0_enq_hdl
j isr_rx1_enq_hdl