tests: add test for the aconno board acd52832

tests/board_acd52832/Makefile

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+APPLICATION = board_acd52832
+include ../Makefile.tests_common
+
+BOARD = acd52832
+
+USEMODULE += xtimer
+USEMODULE += mcp23017
+USEMODULE += rtt_stdio
+
+include $(RIOTBASE)/Makefile.include

tests/board_acd52832/README.md

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+# About
+This is a test application for the Board ACD52832 with the following features:
+ - MCP23017 16-Bit I/O Expander with I2C Interface.
+This test application will initialize the MCP23017 with the following parameters:
+ - I2C device address set to 0x20
+ - Blinking LED 2
+
+# Datasheet
+http://ww1.microchip.com/downloads/en/DeviceDoc/20001952C.pdf
+
+# Usage
+Use the RTT feature in RIOT:
+ -> boards -> Makefile.features -> FEATURES_PROVIDED += periph_rtt
+ -> application -> Makefile -> USEMODULE += rtt_stdio
+Setup for terminal 1:
+ -> JLinkExe -> connect -> Device: NRF52 -> TIF: SWD -> Speed: 4000
+Setup for terminal 2:
+ -> JLinkRTTClient

tests/board_acd52832/main.c

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+/*
+ * Copyright (C) 2017 HAW Hamburg
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
+/**
+ * @ingroup     tests
+ * @{
+ *
+ * @file
+ * @brief       ACD52832 test application
+ *
+ * @author      Dimitri Nahm <dimitri.nahm@haw-hamburg.de>
+ *
+ * @}
+ */
+
+#include <stdio.h>
+
+#include "mcp23017.h"
+#include "mcp23017_regs.h"
+#include "mcp23017_params.h"
+#include "xtimer.h"
+
+#define SLEEP_DELAY 1000 * 1000U
+#define PROGRAM_DELAY 10 * 1000U
+
+mcp23017_t dev;
+
+static void int_handler(void *arg)
+{
+    uint8_t value;
+    /* Reset and capture interrupt */
+    value = mcp23017_capture_interrupt(&dev, PORT_A);
+    if (~value & PIN_3) {
+        puts("S4-R pressed\n");
+    }
+    else if (~value & PIN_4) {
+        puts("S4-DN pressed\n");
+    }
+    else if (~value & PIN_5) {
+        puts("S4-L pressed\n");
+    }
+    else if (~value & PIN_6) {
+        puts("S4-UP pressed\n");
+    }
+    else if (~value & PIN_7) {
+        puts("S4-CTR pressed\n");
+    }
+}
+
+int main(void)
+{
+    int int_a_pin = mcp23017_params[0].int_a_pin;
+    // int int_b_pin = mcp23017_params[0].int_b_pin;
+
+    dev.i2c = MCP23017_PARAM_I2C;
+    dev.addr = MCP23017_PARAM_ADDR;
+
+    puts("[MCP23017]: test application");
+    printf("[MCP23017]: initializing at I2C_DEV(%i)...\n", dev.i2c);
+
+    if (mcp23017_init(&dev, (mcp23017_params_t*)mcp23017_params) == MCP23017_OK) {
+        puts("[MCP23017]: init MCP23017 OK\n");
+    }
+    else {
+        puts("[MCP23017]: init MCP23017 failed\n");
+        return -1;
+    }
+
+    /* LED 2 */
+    if (mcp23017_set_dir(&dev, PORT_B, PIN_1, OUTPUT) == MCP23017_OK) {
+        puts("[MCP23017]: init LED 2 OK\n");
+    }
+    else {
+        puts("[MCP23017]: init LED 2 failed\n");
+        return -1;
+    }
+    xtimer_usleep(PROGRAM_DELAY);
+
+    /* SWITCH 4 */
+    if (mcp23017_set_int(&dev, PORT_A, PIN_3, ENABLE) == MCP23017_OK) {
+        puts("[MCP23017]: init S4-R  OK\n");
+    }
+    else {
+        puts("[MCP23017]: init S4-R failed\n");
+        return -1;
+    }
+    xtimer_usleep(PROGRAM_DELAY);
+    if (mcp23017_set_int(&dev, PORT_A, PIN_4, ENABLE) == MCP23017_OK) {
+        puts("[MCP23017]: init S4-DN OK\n");
+    }
+    else {
+        puts("[MCP23017]: init S4-DN failed\n");
+        return -1;
+    }
+    xtimer_usleep(PROGRAM_DELAY);
+    if (mcp23017_set_int(&dev, PORT_A, PIN_5, ENABLE) == MCP23017_OK) {
+        puts("[MCP23017]: init S4-L OK\n");
+    }
+    else {
+        puts("[MCP23017]: init S4-L failed\n");
+        return -1;
+    }
+    xtimer_usleep(PROGRAM_DELAY);
+    if (mcp23017_set_int(&dev, PORT_A, PIN_6, ENABLE) == MCP23017_OK) {
+        puts("[MCP23017]: init S4-UP OK\n");
+    }
+    else {
+        puts("[MCP23017]: init S4-UP failed\n");
+        return -1;
+    }
+    xtimer_usleep(PROGRAM_DELAY);
+    if (mcp23017_set_int(&dev, PORT_A, PIN_7, ENABLE) == MCP23017_OK) {
+        puts("[MCP23017]: init S4-CTR OK\n");
+    }
+    else {
+        puts("[MCP23017]: init S4-CTR failed\n");
+        return -1;
+    }
+    xtimer_usleep(PROGRAM_DELAY);
+    mcp23017_capture_interrupt(&dev, PORT_A);
+
+    // /* SWITCH 2 */
+    // if (mcp23017_set_int(&dev, PORT_B, PIN_0, ENABLE) == MCP23017_OK) {
+    //     puts("[MCP23017]: init S2 OK\n");
+    // }
+    // else {
+    //     puts("[MCP23017]: init S2 failed\n");
+    //     return -1;
+    // }
+    // xtimer_usleep(PROGRAM_DELAY);
+    // mcp23017_capture_interrupt(&dev, PORT_B);
+
+    /* Interrupt setup */
+    if (gpio_init_int(GPIO_PIN(0, int_a_pin), GPIO_IN, GPIO_FALLING, int_handler, (void *)int_a_pin) < 0) {
+        puts("[MCP23017] error: init of INT A failed\n");
+        return 1;
+    }
+
+    while(1) {
+        /* Toggle LED 2 */
+        puts("[MCP23017]: LED 2 on\n");
+        if (mcp23017_set_pin_value(&dev, PORT_B, PIN_1, HIGH) != MCP23017_OK) {
+            return -1;
+        }
+        xtimer_usleep(SLEEP_DELAY);
+        puts("[MCP23017]: LED 2 off\n");
+        if (mcp23017_set_pin_value(&dev, PORT_B, PIN_1, LOW) != MCP23017_OK) {
+            return -1;
+        }
+        xtimer_usleep(SLEEP_DELAY);
+    }
+    return 0;
+}