RE: ATCDC: Digimorf, Day 26, The project SEGA SG-1000 Emulator on PSoC62S4 Pioneer kit - part 6

ClarkJarvis-Infineon — Mon, 27 Mar 2023 19:23:04 GMT

Digimorf, I believe the initial issue you are dealing with is that the IDE's Context Assist is not picking up the compiler defines / macros correctly. This happens quite often with ModusToolbox, as it is using a Make based built system and is separate from the IDE (I'm assuming you are using the Eclipse-based IDE).

The CY_CPU_CORTEX_M0P macro gets set by including the corresponding cmsis core_cm0.h header file. The Makefile is responsible for including this specific file, but unfortunately that means the IDE is cannot resolve which header file (cm0, cm4, cm7, etc...) is included for context assist features.

For the CM0 project, the CY_CPU_CORTEX_M0P and CY_IP_M4CPUSS are defined and even though the code in the IDE appears to be compiled out with the #ifdef, it is in fact really there...

Refer to the code snippet below where I setup a Timer interrupt and mux the peripheral interrupt source to one of the CM0+ IRQ sources.

[embed:dc8ab71f-3b98-42d9-b0f6-e21e02a0f8e2:d729196b-01ce-42cb-bac9-55b35a68ace2:type=c_cpp&text=%2F%2A%20Initialize%20and%20Enable%20Timer%20interrupt%20with%20the%20NVIC%20%2A%2F%0Acy_stc_sysint_t%20irqCfg_Timer%20%3D%20%7B%0A%20%20%20%20.intrSrc%20%3D%20NvicMux2_IRQn%2C%0A%20%20%20%20.cm0pSrc%20%3D%20MyTimer_IRQ%2C%0A%20%20%20%20.intrPriority%20%3D%203%0A%7D%3B%0ACy_SysInt_Init%28%26irqCfg_Timer%2C%20MyTimerISR%29%3B%0ANVIC_ClearPendingIRQ%28irqCfg_Timer.intrSrc%29%3B%0ANVIC_EnableIRQ%28irqCfg_Timer.intrSrc%29%3B]

In the code snippet above, I have used the Device Configurator to setup a TCPWM as a Timer, and provided a name of "MyTimer"

The generated code then creates several additional macros that I'm using in my application. For this code snippet above, I'm using MyTimer_IRQ that the Device Configurator has mapped to tcpwm_1_interrupts_4_IRQn.

By specifying the additional .cm0pSrc variable and the .intrSrc variable, the device will map the peripheral interrupt source for the TWPWM Group 1 Instance 4 to the CM0+ NVIC IRQ 2

Make sure the subsequent NVIC_xxxx commands are then using the NvicMux value (and not the peripheral source). I've run into that issue in my own projects.

For additional details here is a good Application Note on PSoC 5 MCU interrupts (link)

RE: ATCDC: Digimorf, Day 26, The project SEGA SG-1000 Emulator on PSoC62S4 Pioneer kit - part 6

e14phil — Mon, 27 Mar 2023 13:58:53 GMT

Hey [mention:d332699ebc20475a9cae2d7a3e2c034c:e9ed411860ed4f2ba0265705b8793d05] I am going to send this over to our technical contacts at Infineon who have kindly offered to help. Hope that is ok with you! [emoticon:c4563cd7d5574777a71c318021cbbcc8]
You posts have been fantastic