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
