i.mx7 ULP ends up in DefaultISR when using LPI2C1_IRQn

klaas — Mon, 08 Nov 2021 09:37:52 GMT

Hi all,

I'm currently facing issues while testing I2C interrupts on a costum imx7ulp board.

Using examples provided with IAR works fine (lpi2c_interrupt_transfer). But this example is using an old SDK version: fsl_lpi2c.h with version 2.1.1).

For my project I would like to base my project on the new SDK and therefore I did build a new project with the config tool. After that I copied the I2C master part of the example project mentioned above into my main.cpp:

/* * Copyright (c) 2013 - 2015, Freescale Semiconductor, Inc. * Copyright 2016-2017 NXP * All rights reserved. * * SPDX-License-Identifier: BSD-3-Clause */ #include "fsl_device_registers.h" #include "fsl_debug_console.h" #include "pin_mux.h" #include "clock_config.h" #include "board.h" #include "fsl_lpi2c.h" lpi2c_master_handle_t g_m_handle; uint8_t g_master_buff[32]; /*! * @brief Main function */ int main(void) { char ch; /* Init board hardware. */ BOARD_InitPins(); BOARD_BootClockRUN(); BOARD_InitDebugConsole(); PRINTF("Start CM4 .......................... \r\n"); lpi2c_master_transfer_t masterXfer = {0}; status_t reVal = kStatus_Fail; CLOCK_SetIpSrc(kCLOCK_Lpi2c1, kCLOCK_IpSrcFircAsync); NVIC_SetPriority(LPI2C1_IRQn, 0); lpi2c_master_config_t masterConfig; /* * masterConfig.debugEnable = false; * masterConfig.ignoreAck = false; * masterConfig.pinConfig = kLPI2C_2PinOpenDrain; * masterConfig.baudRate_Hz = 100000U; * masterConfig.busIdleTimeout_ns = 0; * masterConfig.pinLowTimeout_ns = 0; * masterConfig.sdaGlitchFilterWidth_ns = 0; * masterConfig.sclGlitchFilterWidth_ns = 0; */ LPI2C_MasterGetDefaultConfig(&masterConfig); /* Change the default baudrate configuration */ masterConfig.baudRate_Hz = 100000U; /* Initialize the LPI2C master peripheral */ LPI2C_MasterInit(LPI2C1, &masterConfig, CLOCK_GetIpFreq(kCLOCK_Lpi2c1)); /* Create the LPI2C handle for the non-blocking transfer */ LPI2C_MasterTransferCreateHandle(LPI2C1, &g_m_handle, NULL, NULL); for (int i = 0; i < sizeof(g_master_buff); i++) { g_master_buff[i] = i; } /* Setup the master transfer */ masterXfer.slaveAddress = 0x7E; masterXfer.direction = kLPI2C_Write; masterXfer.subaddress = 0; masterXfer.subaddressSize = 0; masterXfer.data = g_master_buff; masterXfer.dataSize = sizeof(g_master_buff); masterXfer.flags = kLPI2C_TransferDefaultFlag; /* Send master non-blocking data to slave */ reVal = LPI2C_MasterTransferNonBlocking(LPI2C1, &g_m_handle, &masterXfer); while (true) {} }

When I execute this I will always end up in the DefaultISR after LPI2C_MasterTransferCreateHandle() function is called.

Any Idea what is going wrong here? For me it looks like I did everything as done in the example. The major difference is, that I'm using a new SDK version (fsl_lpi2c.h: 2.3.0).

Thanks
Klaas

Re: i.mx7 ULP ends up in DefaultISR when using LPI2C1_IRQn

klaas — Mon, 08 Nov 2021 10:32:30 GMT

Hi all,

I found the issue. My project was configured to C++ instead of C as for the example.

Now I have to figure out how this works with C++...

Thanks anyway
Klaas

Re: i.mx7 ULP ends up in DefaultISR when using LPI2C1_IRQn

art — Tue, 09 Nov 2021 07:18:23 GMT

Glad to hear that the problem is solved.

Best Regards,

Artur

topic i.mx7 ULP ends up in DefaultISR when using LPI2C1_IRQn in i.MX Processors

i.mx7 ULP ends up in DefaultISR when using LPI2C1_IRQn

Re: i.mx7 ULP ends up in DefaultISR when using LPI2C1_IRQn

Re: i.mx7 ULP ends up in DefaultISR when using LPI2C1_IRQn