chenjuchuan 发表于 2023-5-31 14:32:37

Uart短接不通

本帖最后由 chenjuchuan 于 2023-5-31 15:10 编辑

fltest_uarttest -d /dev/ttyS3
fltest_uarttest -d /dev/ttyS4
fltest_uarttest -d /dev/ttyS5
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
只发不接收，使用界面Terminal也不通。
都已短接，不清楚为什么不通？如何排查？

chenjuchuan 发表于 2023-6-1 08:07:44

怎么没有解答呀？

huhj 发表于 2023-6-1 10:34:02

确认是否有对应的ttyS节点，在dev目录下
观察运行时是否有报错信息之类
uboot选屏是否将RGB显示关闭
或者更换核心板尝试
也可以使用micorcom尝试

chenjuchuan 发表于 2023-6-1 15:19:51

本帖最后由 chenjuchuan 于 2023-6-1 15:22 编辑

huhj 发表于 2023-6-1 10:34
确认是否有对应的ttyS节点，在dev目录下
观察运行时是否有报错信息之类
uboot选屏是否将RGB显示关闭


dev目录下存在
没有报错信息，一直处于等待中
使用的是咱们开发板，Uboot选屏是否开启RGB显示如何查看？
我现在通过高清口显示

chenjuchuan 发表于 2023-6-1 15:28:14

本帖最后由 chenjuchuan 于 2023-6-1 15:29 编辑

huhj 发表于 2023-6-1 10:34
确认是否有对应的ttyS节点，在dev目录下
观察运行时是否有报错信息之类
uboot选屏是否将RGB显示关闭


microcom -s 115200 /dev/ttyS4 仍然不可以，始终等待中

chenjuchuan 发表于 2023-6-2 17:15:46

本帖最后由 chenjuchuan 于 2023-6-2 17:17 编辑

huhj 发表于 2023-6-1 10:34
确认是否有对应的ttyS节点，在dev目录下
观察运行时是否有报错信息之类
uboot选屏是否将RGB显示关闭


禁用了rgb和其他所有，然后执行出现如下错误：
# fltest_uarttest -d /dev/ttyS3
of_dma_request_slave_channel: dma-names property of node 'Welcome                                                                                                                                                            to uart test
Send test data:
forlinx_uart_test.1234567890...
/serial@fe670000' missing or empty
ttyS3 - failed to request DMA, use interrupt mode



perrypan 发表于 2023-7-13 15:00:57

这个问题解决了吗遇到类似的问题

chenjuchuan 发表于 2023-7-15 10:47:59

perrypan 发表于 2023-7-13 15:00
这个问题解决了吗遇到类似的问题

解决了，我这个问题是核心板坏了。
页: [1]
查看完整版本: Uart短接不通