Part Number: AM2434
Other Parts Discussed in Thread: SYSCONFIG
I’m working with AM2434 and MCU+ SDK 11.00.00.15, and during integration I found a few issues and made several small modifications that might be useful to incorporate in a future SDK revision.
If there is a recommended way to achieve the same results without modifying the SDK, please let me know. In general, I’m finding it inconvenient that even small user-side configuration changes (e.g., FreeRTOSConfig.h) require rebuilding SDK libraries, which makes it harder to maintain multiple projects with different configurations.
Below is a list of the changes I applied, grouped by component.
1) TinyUSB (NoRTOS) – missing NO_SYS define
File: source/usb/tinyusb/makefile.ncm_nortos.am243x.r5f.ti-arm-clang
In DEFINES_common, add:
-DNO_SYS=1
File: source/usb/tinyusb/makefile.rndis_nortos.am243x.r5f.ti-arm-clang
In DEFINES_common, add:
-DNO_SYS=1
2) FreeRTOS kernel makefile – missing file and heap selection
File: source/kernel/freertos/makefile.am243x.r5f.ti-arm-clang
In FILES_common, add:
stream_buffer.c
Optionally (but preferable for my use case), replace: heap_3.c → heap_4.c
3) ENET lwIP interface – pbuf type + IPv6 support
File: source/networking/enet/core/lwipif/src/lwip2enet.c
Around line ~1246, change: PBUF_POOL → PBUF_REF
File: source/networking/enet/core/lwipif/src/lwip2lwipif.c
a) Add IPv6 header include
#include "lwip/ethip6.h"
b) In LWIPIF_LWIP_init, when populating netif flags/interface, add IPv6 support
netif->flags |= NETIF_FLAG_ETHARP | NETIF_FLAG_BROADCAST;
#if LWIP_IGMP
netif->flags |= NETIF_FLAG_IGMP;
#endif
#ifdef LWIP_IPV6
netif->flags |= NETIF_FLAG_MLD6;
netif->hwaddr_len = ETH_HWADDR_LEN;
netif->output_ip6 = ethip6_output;
#endif
4) lwIP TLS (mbedTLS) – pbuf type + entropy/RNG hook
File: source/networking/lwip/lwip-stack/src/apps/altcp_tls/altcp_tls_mbedtls.c
Around line ~385, change: PBUF_POOL → PBUF_RAM
Replace ALTCP_MBEDTLS_RNG_FN block with the following to use a real entropy generator:
#ifndef ALTCP_MBEDTLS_RNG_FN
extern int EnetApp_getEntropy(void *ctx, unsigned char *buffer, size_t len);
#define ALTCP_MBEDTLS_RNG_FN EnetApp_getEntropy
#endif
5) lwIP stack makefile – missing mDNS and TLS files
File: source/networking/lwip/makefile.stack_freertos.am243x.r5f.ti-arm-clang
Under FILES_common, add the required mDNS sources:
mdns_out.c
mdns_domain.c
Also add the missing TLS source:
altcp_tls_mbedtls.c
6) Percepio Tracealyzer / FreeRTOS tracing – include paths needed for build
To integrate Percepio Tracealyzer support (FreeRTOS tracing), I had to add the following include paths; otherwise the SDK does not build.
Files:
- source/networking/enet/makefile.lwipif-ic-freertos.am243x.r5f.ti-arm-clang
- source/networking/enet/makefile.lwipif-cpsw-freertos.am243x.r5f.ti-arm-clang
- source/networking/enet/makefile.lwipif-icssg-freertos.am243x.r5f.ti-arm-clang
- source/networking/lwip/makefile.contrib-freertos.am243x.r5f.ti-arm-clang
- source/networking/lwip/makefile.stack_freertos.am243x.r5f.ti-arm-clang
Add to INCLUDES_common:
-I${MCU_PLUS_SDK_PATH}/source/kernel/freertos/config/am243x/r5f \
-I${MCU_PLUS_SDK_PATH}/source/kernel/freertos/FreeRTOS-Kernel/include \
-I${MCU_PLUS_SDK_PATH}/source/kernel/freertos/portable/TI_ARM_CLANG/ARM_CR5F \
Development environment
- MCU+ SDK: 11.00.00.15
- Compiler: TI ARM CLANG 4.0.4 LTS
- SysConfig: 1.26.0
- CCS: 20.40
- Device: AM2434 (Cortex-R5F_0-0)
