An executable which combines the C-model for the SD-FEC, LDPC Encoder/Decoder, or Polar Encoder/Decoder IP with other DSP IP C-models (for example, CORDIC) will crash with a run-time error.
The error message or signature will differ depending on the order the IP C-models are linked to the executable, and therefore will be loaded at run time.
In this example, the C-model for one of the other DSP IP (for example, CORDIC) is loaded/linked first:
The create call for the SD-FEC, LDPC Encoder/Decoder or Polar Encoder/Decoder models will fail with an uncaught error:
When the C-model for the SD-FEC, LDPC Encoder/Decoder or Polar Encoder/Decoder is loaded/linked first, the error signature is less well defined.
It is likely be reported as an invalid pointer access by the glibc library:
This is a known issue when running C model simulation with multiple DSP IPs.
It will be fixed in Vivado 2019.1 and later versions.
SDFEC, LDPC, and Polar IPs use a newer version of GCC that supports C++11, which is not compatible with other DSP IP C models.
All users are recommended to upgrade to the latest Vivado version.
For Vivado 2018.3:
Answer Number | 问答标题 | 问题版本 | 已解决问题的版本 |
---|---|---|---|
71874 | LDPC Encoder/Decoder v2.0 (Rev 2) - Patch Updates for LDPC Encoder/Decoder v2.0 release in Vivado 2018.3 | N/A | N/A |
Answer Number | 问答标题 | 问题版本 | 已解决问题的版本 |
---|---|---|---|
71875 | Polar Encoder/Decoder 1.0 (Rev 2) - Patch release for Polar Encoder/Decoder v1.0 in Vivado 2018.3 | N/A | N/A |
71873 | 软决策 FEC (SDFEC) 集成块 v1.1 (Rev 2) — 补丁针对 Vivado 2018.3 中的软决策 FEC (SDFEC) 集成块 v1.1 进行了更新 | N/A | N/A |
71874 | LDPC Encoder/Decoder v2.0 (Rev 2) - Patch Updates for LDPC Encoder/Decoder v2.0 release in Vivado 2018.3 | N/A | N/A |
AR# 71876 | |
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日期 | 01/10/2019 |
状态 | Active |
Type | 综合文章 |
IP |