How mandny TWI_;NGR instances are possible

[Constantin]

Hi,

I would like to have two different twi managers. One with TWI0 and one with TWI1. But if I try to enable them I get an error:

sdk_config.h:1810:22: error: unable to find numeric literal operator 'operator""_INSTANCE_INDEX'

Is there a reason for this?

Thanks,

C.W.

[Turbo J]

Post the file here. This is probably just a syntax error.

[Constantin]

Okay it is inside a c++ class:

#include <nrf_gpio.h>
#include <nrf_drv_gpiote.h>
#include <nrf_error.h>
#include <nrf_delay.h>
#include <nrf_drv_twi.h>
#include <app_util_platform.h>
#include <nrf_twi_mngr.h>
#include "peripheral_pin_map.h"

#include "PowerModule.hpp"

#define NRF_LOG_MODULE_NAME POWERMODULE
#include "nrf_log.h"
NRF_LOG_MODULE_REGISTER();

static const uint8_t MAX_PENDING_FUEL_GAUGE_TRANSACTIONS = 10;

NRF_TWI_MNGR_DEF(m_nrf_twi_mngr_fuel, MAX_PENDING_FUEL_GAUGE_TRANSACTIONS, TWI1_INSTANCE_INDEX);

nrf_drv_twi_config_t const twi_stc3100_config = {
   .scl                = FUEL_GAUGE_SCL,
   .sda                = FUEL_GAUGE_SDA,
   .frequency          = NRF_TWI_FREQ_400K,
   .interrupt_priority = APP_IRQ_PRIORITY_LOW,
   .clear_bus_init     = false
};

That is the beginning and the sdk_config.h looks like this:

// <e> TWI_ENABLED - nrf_drv_twi - TWI/TWIM peripheral driver
//==========================================================
#ifndef TWI_ENABLED
#define TWI_ENABLED 1
#endif
// <o> TWI_DEFAULT_CONFIG_FREQUENCY  - Frequency
 
// <26738688=> 100k
// <67108864=> 250k
// <104857600=> 400k

#ifndef TWI_DEFAULT_CONFIG_FREQUENCY
#define TWI_DEFAULT_CONFIG_FREQUENCY 26738688
#endif

// <q> TWI_DEFAULT_CONFIG_CLR_BUS_INIT  - Enables bus clearing procedure during init
 

#ifndef TWI_DEFAULT_CONFIG_CLR_BUS_INIT
#define TWI_DEFAULT_CONFIG_CLR_BUS_INIT 0
#endif

// <q> TWI_DEFAULT_CONFIG_HOLD_BUS_UNINIT  - Enables bus holding after uninit
 

#ifndef TWI_DEFAULT_CONFIG_HOLD_BUS_UNINIT
#define TWI_DEFAULT_CONFIG_HOLD_BUS_UNINIT 0
#endif

// <o> TWI_DEFAULT_CONFIG_IRQ_PRIORITY  - Interrupt priority
 

// <i> Priorities 0,2 (nRF51) and 0,1,4,5 (nRF52) are reserved for SoftDevice
// <0=> 0 (highest)
// <1=> 1
// <2=> 2
// <3=> 3
// <4=> 4
// <5=> 5
// <6=> 6
// <7=> 7

#ifndef TWI_DEFAULT_CONFIG_IRQ_PRIORITY
#define TWI_DEFAULT_CONFIG_IRQ_PRIORITY 7
#endif

// <e> TWI0_ENABLED - Enable TWI0 instance
//==========================================================
#ifndef TWI0_ENABLED
#define TWI0_ENABLED 1
#endif
// <q> TWI0_USE_EASY_DMA  - Use EasyDMA (if present)
 

#ifndef TWI0_USE_EASY_DMA
#define TWI0_USE_EASY_DMA 1
#endif

// </e>

// <e> TWI1_ENABLED - Enable TWI1 instance
//==========================================================
#ifndef TWI1_ENABLED
#define TWI1_ENABLED 1
#endif
// <q> TWI1_USE_EASY_DMA  - Use EasyDMA (if present)
 

#ifndef TWI1_USE_EASY_DMA
#define TWI1_USE_EASY_DMA 1
#endif

Since I use the TWI0 already for a different sensor bus. I would like to use TWI1 but if I use the TWI1 it gives errors.

[Jørgen Holmefjord]

Where did you define TWI1_INSTANCE_INDEX? Have you tried replacing this with 1?

[Constantin]

Yes this was the issue. I guess it came from some old garbage. If I replace them with exactly 1 and 0 it is running.