cdma_app.c does not work correctly
还没有人认领这个 Issue。
评估
- 难度
- 2/5
- 预计耗时
- 1-3 小时
- 新手友好度
- 55/100
- Issue 类型
- 缺陷
- 描述清晰度
- 描述清楚
- 活跃度
- 停滞
- 技术栈
- c
- 领域
- embedded-iot
调研方向
Start in cdma_app.c, focusing on the SrcPtr and DestPtr declarations, the DMA transfer length, and the buffer comparison. Confirm how the source and destination buffers are declared and how the comparison length is calculated. Done means the application reports a successful comparison after transferring 64 bytes, using the issue's described pointer declarations.
由索引模型根据 Issue 内容生成。
描述
I've been following the Zynq-7000 SoC Embedded Design Tutorial (2023.2) using a Digilent Zybo Z7-20. The cdma-app showed FAIL even though the DMA transfer occurred (I used the Memory inspector to read 0x2000_0000 (the source) and 0x3000_0000 (the destination). I root caused the problem to the buffer compare where it appears that 256 bytes were being compared (Length=64*sizeof(u32)) even though only 64 bytes were transferred in the DMA transfer.
The fix was pretty easy once I figured out so I thought I'd share. The problem was in the SrcPtr and DestPtr declarations. I changed the declarations as shown:
// Changed from original code to fix pointer references
u8 SrcPtr = SourceAddr;
u8 DestPtr= DestAddr;
// end changes
Both the source and destination buffers were defined as u8 in the version of the app that I downloaded so now SrcPtr and DestPtr can access the u8 "array".
Roy
- 主要语言
- 没有语言数据
- 星标
- 172
- 派生
- 70
- 平均合并
- 9 分钟
- 30 天内合并 PR
- 1
贡献指南
这个仓库没有索引到贡献指南
从这里开始
- 先读完整个 Issue，再读项目的贡献指南。
- 在 Issue 下留言说明你要接手 —— 这能避免两个人做同样的事。
- Fork 仓库，在一个分支上完成修改。
- 提交 Pull Request，并在描述里引用这个 Issue 编号。
Xilinx/Embedded-Design-Tutorials 的其他 Issue
-
难度 2/5 1-3 小时 新手友好度 45/100
-
难度 1/5 1 小时以内 新手友好度 48/100
-
难度 4/5 3-5 天 新手友好度 25/100
-
难度 3/5 1-2 天 新手友好度 35/100
-
难度 4/5 3-5 天 新手友好度 28/100
查看 Xilinx/Embedded-Design-Tutorials 的全部 Issue
相似的 Issue
-
enhancement
难度 2/5 1-3 小时 新手友好度 76/100
-
[adam] AdamNet network read doesn't cap to MAX_ADAM_PACKET_LEN, overflows client receive buffers 未关闭
难度 2/5 1-3 小时 新手友好度 88/100
FujiNetWIFI/fujinet-firmware#1649 · 2 条评论 ·
-
难度 2/5 1-3 小时 新手友好度 68/100
espressif/esp-iot-solution#786 ·
-
难度 2/5 1-3 小时 新手友好度 72/100
-
难度 2/5 1-3 小时 新手友好度 88/100