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i2c_test: add a testcase to test i2c api for microchip board

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test i2c api on microchip mec15xxevb_assy6853 board by writing
and reading data with nxp pca95xx device on board.

Signed-off-by: peng1 chen <peng1.chen@intel.com>
This commit is contained in:
peng1 chen 2021-01-14 15:36:00 +08:00 committed by Anas Nashif
parent d95a5f9b35
commit 1e05bc2300
6 changed files with 111 additions and 1 deletions
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2
boards/arm/mec15xxevb_assy6853/mec15xxevb_assy6853.dts
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@ -93,7 +93,7 @@
label = "GPIO_P0";
/* Depends on JP53 for device address.
* Pin 1-2 = A2, pin 3-4 = A1, pin 5-6 = A0.
* Pin 1-2 = A0, pin 3-4 = A1, pin 5-6 = A2.
* Address is: 0100<A2><A1><A0>b.
*
* Default has pin 1-2 on JP53 connected,

8
tests/boards/mec15xxevb_assy6853/i2c_api/CMakeLists.txt Normal file
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# SPDX-License-Identifier: Apache-2.0
cmake_minimum_required(VERSION 3.13.1)
find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
project(i2c_api)
FILE(GLOB app_sources src/*.c)
target_sources(app PRIVATE ${app_sources})

23
tests/boards/mec15xxevb_assy6853/i2c_api/README.txt Normal file
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I2C Test For Microchip board
############################
This application test is used to test the I2C driver on Microchip
mec15xxevb_assy6853 board.
Board Hardware Setup
####################
As the I2C slave device NXP pca95xx on mec15xxevb_assy6853 is connected
to I2C00 port, however, I2C00 port is shared with UART2 RS232 to TTL
converter used to catch serial log, so it's not possible to use UART2
and I2C00 port simultaneously.
We need to change to use I2C01 port by making some jumpers setting as below:
* JP99 1-2 Connected Connect I2C01_SDA from CPU to header J5
* JP99 13-14 Connected Connect I2C01_SCL from CPU to header J5
* JP25 21-22 Connected External pull-up for I2C01_SDA
* JP25 23-24 Connected External pull-up for I2C01_SCL
*
* JP44.1 J5.1 Connected Connect NXP PCA95xx to I2C01
* JP44.3 J5.3 Connected Connect NXP PCA95xx to I2C01

2
tests/boards/mec15xxevb_assy6853/i2c_api/prj.conf Normal file
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CONFIG_I2C=y
CONFIG_ZTEST=y

71
tests/boards/mec15xxevb_assy6853/i2c_api/src/main.c Normal file
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/*
* Copyright (c) 2021 Intel Corporation
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <drivers/i2c.h>
#include <zephyr.h>
#include <ztest.h>
#define I2C_DEV_NAME DT_LABEL(DT_ALIAS(i2c1))
/* command to configure port direction of NXP PCA95xx */
#define REG_CONF_PORT0 0x06U
/* test data used to write into registers */
uint8_t test_data[2] = {0xAA, 0xAA};
/**
* @brief Test i2c api by communicating with pca95xx
* @details
* - get i2c mainline device
* - write data into pca95xx
* - read data from pca95xx
* - check read data whether correct
*/
void test_i2c_pca95xx(void)
{
int32_t ret;
uint8_t datas[3];
uint32_t i2c_cfg = I2C_SPEED_SET(I2C_SPEED_STANDARD) | I2C_MODE_MASTER;
/* get i2c device */
const struct device *i2c_dev = device_get_binding(I2C_DEV_NAME);
zassert_true(i2c_dev, "Cannot get i2c device");
/* configure i2c device */
ret = i2c_configure(i2c_dev, i2c_cfg);
zassert_true(ret == 0, "Failed to configure i2c device");
/* write configuration to register 6 and 7 of PCA95XX*/
(void)memset(datas, 0, 3);
datas[0] = REG_CONF_PORT0;
datas[1] = test_data[0];
datas[2] = test_data[1];
ret = i2c_write(i2c_dev, datas, 3, 0x26);
zassert_true(ret == 0, "Failed to write data to i2c device");
/* read configuration from register 6 and 7 */
(void)memset(datas, 0, 3);
datas[0] = REG_CONF_PORT0;
ret = i2c_write(i2c_dev, datas, 1, 0x26);
zassert_true(ret == 0, "Failed to write data to i2c device");
(void)memset(datas, 0, 3);
ret = i2c_read(i2c_dev, datas, 2, 0x26);
zassert_true(ret == 0, "Failed to read data from i2c device");
/* check read data whether correct */
ret = memcmp(datas, test_data, 2);
zassert_true(ret == 0, "Read data is different to write data");
}
void test_main(void)
{
ztest_test_suite(i2c_test,
ztest_unit_test(test_i2c_pca95xx)
);
ztest_run_test_suite(i2c_test);
}

6
tests/boards/mec15xxevb_assy6853/i2c_api/testcase.yaml Normal file
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tests:
boards.mec15xxevb_assy6853.i2c:
depends_on: i2c
tags: drivers i2c
filter: dt_compat_enabled("nxp,pca95xx")
platform_allow: mec15xxevb_assy6853