Add platform nrf52

src/driver.c

@@ -0,0 +1,67 @@
+#include <stdlib.h>
+#include <assert.h>
+
+#include "driver.h"
+
+int drv_open(const struct driver *drv)
+{
+    int res = -1;
+    assert(drv != NULL);
+
+    if(drv->fp->open) {
+        res = drv->fp->open(drv);
+    }
+
+    return res;
+}
+
+int drv_close(const struct driver *drv)
+{
+    int res = -1;
+    assert(drv != NULL);
+
+    if(drv->fp->close) {
+        res = drv->fp->close(drv);
+    }
+
+    return res;
+}
+
+int drv_read(const struct driver *drv, char *buffer, unsigned int length)
+{
+    int res = -1;
+    assert(drv != NULL);
+
+    if(drv->fp->read) {
+        res =  drv->fp->read(drv, buffer, length);
+    }
+
+    return res;
+}
+
+int drv_write(const struct driver *drv, const char *buffer, unsigned int length)
+{
+    int res = -1;
+    assert(drv != NULL);
+
+    if(drv->fp->write) {
+        res =  drv->fp->write(drv, buffer, length);
+    }
+
+    return res;
+}
+
+int drv_ioctl(const struct driver *drv, unsigned int cmd, unsigned int argc, ...)
+{
+    int res = -1;
+    assert(drv != NULL);
+
+    if(drv->fp->ioctl) {
+        va_list args;
+        va_start(args, argc);
+        res = drv->fp->ioctl(drv, cmd, argc, args);
+        va_end(args);
+    }
+
+    return res;
+}

src/main.c

@@ -1,77 +1,28 @@
-/**
- * Copyright (c) 2014 - 2019, Nordic Semiconductor ASA
- *
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without modification,
- * are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form, except as embedded into a Nordic
- *    Semiconductor ASA integrated circuit in a product or a software update for
- *    such product, must reproduce the above copyright notice, this list of
- *    conditions and the following disclaimer in the documentation and/or other
- *    materials provided with the distribution.
- *
- * 3. Neither the name of Nordic Semiconductor ASA nor the names of its
- *    contributors may be used to endorse or promote products derived from this
- *    software without specific prior written permission.
- *
- * 4. This software, with or without modification, must only be used with a
- *    Nordic Semiconductor ASA integrated circuit.
- *
- * 5. Any software provided in binary form under this license must not be reverse
- *    engineered, decompiled, modified and/or disassembled.
- *
- * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
- * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
- * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- */
-/** @file
- *
- * @defgroup blinky_example_main main.c
- * @{
- * @ingroup blinky_example
- * @brief Blinky Example Application main file.
- *
- * This file contains the source code for a sample application to blink LEDs.
- *
- */
-
 #include <stdbool.h>
 #include <stdint.h>
 #include "nrf_delay.h"
 #include "boards.h"
 
-/**
- * @brief Function for application main entry.
- */
+#include "platform/narf52/narf52_dk.h"
+
+#include "driver.h"
+
 int main(void)
 {
-    /* Configure board. */
-    bsp_board_init(BSP_INIT_LEDS);
+    // bsp_board_init(BSP_INIT_LEDS);
+    drv_open(&led_1);
+    drv_open(&led_2);
+    drv_open(&led_3);
+    drv_open(&led_4);
 
-    /* Toggle LEDs. */
-    while (true)
-    {
-        for (int i = 0; i < 4; i++)
-        {
-            bsp_board_led_invert(i);
+    while(true) {
+        for(uint32_t i = 0; i < UINT32_MAX; i++) {
+            char x = 0x30 | (char)(1 & i);
+            drv_write(&led_1, &x, 1);
+            drv_write(&led_2, &x, 1);
+            drv_write(&led_3, &x, 1);
+            drv_write(&led_4, &x, 1);
             nrf_delay_ms(500);
         }
     }
 }
-
-/**
- *@}
- **/

src/platform/nrf52/gpio.c

@@ -0,0 +1,82 @@
+#include <assert.h>
+#include <fcntl.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <unistd.h>
+
+#include "platform/narf52/narf52.h"
+#include "platform/narf52/narf52_gpio.h"
+
+#include "gpio.h"
+
+int gpio_open(const struct driver *drv)
+{
+    assert(NULL != drv);
+
+    int res = -1;
+    struct narf52_gpio *this = (struct narf52_gpio *)(drv->dev);
+    struct narf52_gpio_type *reg = (struct narf52_gpio_type *)NARF_P0_BASE;
+
+    reg->PIN_CNF[this->pin_number] = ((uint32_t)(this->dir) << 0)
+                                   | ((uint32_t)(this->input) << 1)
+                                   | ((uint32_t)(this->pull) << 2)
+                                   | ((uint32_t)(this->drive) << 8)
+                                   | ((uint32_t)(this->sense) << 16);
+
+    return res;
+}
+
+int gpio_close(const struct driver *drv)
+{
+    assert(NULL != drv);
+    int res = -1;
+    struct gpio *this = (struct gpio *)(drv->dev);
+    this = this;
+
+    return res;
+}
+
+int gpio_read(const struct driver *drv, char *buffer, unsigned int len)
+{
+    assert((NULL != drv) && (buffer != NULL));
+    if(len == 0) {
+        return 0;
+    }
+    struct narf52_gpio *this = (struct narf52_gpio *)(drv->dev);
+    struct narf52_gpio_type *reg = (struct narf52_gpio_type *)NARF_P0_BASE;
+    uint32_t state = ((reg->IN) >> (this->pin_number) & 1UL);
+    if(state) {
+        buffer[0] = 0x31;
+    } else {
+        buffer[0] = 0x30;
+    }
+    return 1;
+}
+
+int gpio_write(const struct driver *drv, const char *buffer, unsigned int len)
+{
+    assert((NULL != drv) && (buffer != NULL));
+    if(len == 0) {
+        return 0;
+    }
+    struct narf52_gpio *this = (struct narf52_gpio *)(drv->dev);
+    struct narf52_gpio_type *reg = (struct narf52_gpio_type *)NARF_P0_BASE;
+    if(buffer[0] != 0x30) {
+        reg->OUTSET = 1  << (this->pin_number);
+    } else {
+        reg->OUTCLR = 1  << (this->pin_number);
+    }
+
+    return 1;
+}
+
+int gpio_ioctl(const struct driver *drv, unsigned int cmd, unsigned int argc, va_list args)
+{
+    assert(drv != 0);
+
+    int res = -1;
+    struct gpio *this = (struct gpio *)(drv->dev);
+    this = this;
+
+    return res;
+}