calloc, malloc and interrupts... necto AI ARM

[anubis]

Hi,
1. I can't find calloc or malloc within stdlib.h from MikroElektronika, are there implentations in different libs?

2. Next question is about interrupts. I tried to implement an interrupt like shown in the help file. But I get the following compilation error: \main.c,53): Undeclared identifier 'NVIC_IntEnable' in expression.
How is the NVIC_IntEnable() implementation in mikroSDK2 or mikroSDK2.0.1? Seems that the helpfile shows how to use interrupts the "legacy way".

I appreciate your input.

[filip]

Hi,

Code: Select all

1. I can't find calloc or malloc within stdlib.h from MikroElektronika, are there implentations in different libs?

Malloc is implemented in the Memory Manager library, available for legacy projects.

2. Next question is about interrupts. I tried to implement an interrupt like shown in the help file. But I get the following compilation error: \main.c,53): Undeclared identifier 'NVIC_IntEnable' in expression.
How is the NVIC_IntEnable() implementation in mikroSDK2 or mikroSDK2.0.1? Seems that the helpfile shows how to use interrupts the "legacy way".

The NVIC_xyz functions are declared in legacy libraries, mixing the mikroSDK 2.0 and legacy stuff is something that is not recommended.

Regards,
Filip.

[ralphw]

Hi Filip,

So I have the same question - all the code examples use functions like NVIC_xxxx - or even just Enable_Interrupts(), both of which cause compiler errors. If I use the code generated by the Timer Calculator - it won't compile.

What is the workaround? How do we enable interrupts please?

Thanks!

[filip]

Hi,

Are you using mikroSDK or legacy project ?

Regards,
Filip

[anubis]

Well, the question is:
How can we use interrupts with mikroSDK?

Regards
anubis

[ralphw]

Try these - they directly manipulate the interrupt registers. I could get them to happily flash an LED on a timer tick. However - I'm not having as much fun with the UART interrupts

If you replace the call from the Timer Calculator to these, it should just work. The code's a bit clunky but hey, it works

Best,
R


#include "board.h"
#include "drv_port.h"

///@brief NVIC Enable
void RW_NVIC_EnableIRQ(int IRQn)
{
int bitpos = IRQn-16;
uint32_t bit_pattern = (uint32_t)(1UL << (((uint32_t)bitpos) & 0x1FUL));
uint32_t offset = (((uint32_t)IRQn) >> 5UL);

if ((int32_t)(IRQn) >= 0)
{
if(bitpos<32)
NVIC_ISER0 = bit_pattern;
else if(bitpos<64)
NVIC_ISER1 = bit_pattern;
else if(bitpos<96)
NVIC_ISER2 = bit_pattern;
}
}


///@brief NVIC Disable
void RW_NVIC_DisableIRQ(int IRQn)
{
int bitpos = IRQn-16;
uint32_t bit_pattern = (uint32_t)(1UL << (((uint32_t)bitpos) & 0x1FUL));
uint32_t offset = (((uint32_t)IRQn) >> 5UL);

// bit_pattern = 0xffffffff;

if ((int32_t)(IRQn) >= 0)
{
if(bitpos<32)
NVIC_ICER0 = bit_pattern;
else if(bitpos<64)
NVIC_ICER1 = bit_pattern;
else if(bitpos<96)
NVIC_ICER2 = bit_pattern;
}
}

[filip]

Hi,

Currently, the interrupt mechanism via NVIC_ functions is not supported, we are planning to introduce it in one of the next releases of NECTO.

Regards,
Filip.

[spgfer]

Hi,

since the last post, has any interrupt mechanism (NVIC_ functions) been implemented for MikroC AI. I'm trying to use interrupts on STM32F407VG (Clicker 2)

Is it still needed to enable interrupts directly trough registers?

Code example:

Code: Select all

void Init_Interrupt()
{
  // Pin configuration
  GPIO_Digital_Input(&GPIOD_BASE, _GPIO_PINMASK_0);

  // Pin interrupt
  SYSCFGEN_bit = 1;              // Enable clock for alternate pin functions
  SYSCFG_EXTICR1 |= 0x0003;      // PD_0
  EXTI_IMR       |= 0x00000001;  // Set mask
  EXTI_RTSR      |= 0x00000001;  // Set interrupt on Rising edge
  EXTI_FTSR      |= 0x00000000;  // Set Interrupt on Falling edge

  NVIC_IntEnable(IVT_INT_EXTI0);    // Enable External interrupt
  EnableInterrupts();
}

void Do_Interrupt_EXTI0() iv IVT_INT_EXTI0 ics ICS_AUTO 
{
  if ((EXTI_PR & 0x00000001) != 0)
  {
    // Interrupt code 
    EXTI_PR |= 0x00000001 ; // Clear PD_0 trigger
  }
}

There is an error undeclared identifier for NVIC_IntEnable and EnableInterrupts, but also for GPIO_Digital_Input
Built_in.h doesn't contain any of these functions.

Any help is appreciated

[filip]

Hi,

I'm afraid this hasn't been implemented yet.

Regards,
Filip.