initial draft for alpha version

CMakeLists.txt

@@ -30,6 +30,8 @@ if(CONFIG_IOLINK)
                             ${STACK_SRC}/iolink_sm.c
                             src/osal/osal.c
                             src/osal/osal_log.c
+                            src/iolm.c
+                            src/utils.c
                             src/transciever.c)
 
     #zephyr_library_sources_ifdef(CONFIG_XX xx)

include/iolm/iolm.h

@@ -0,0 +1,7 @@
+/*  Copyright (c) 2024 Victor Chavez
+    SPDX-License-Identifier: GPL-3.0-or-later
+*/
+#pragma once
+
+
+int iolm_init(void);

include/iolm/transciever.h

@@ -2,6 +2,7 @@
     SPDX-License-Identifier: GPL-3.0-or-later
 */
 #pragma once
+#include <osal.h>
 #include <iolink_pl_hw_drv.h>
 #include <stdint.h>
 

include/iolm/utils.h

@@ -0,0 +1,20 @@
+#pragma once
+
+#include <stdint.h>
+
+/**
+ * @brief Decode IOL-Device cycle time 
+ * @details See IO-Link v1.1.3 Table B.15
+ * 
+ * @param encoded_time Encoded Cycle Time
+ * @return uint32_t Cycle time in microseconds
+ */
+uint32_t cyctime_decode_us(uint8_t encoded_time);
+
+/**
+ * @brief Encode IOL-Device cycle time
+ * @details See IO-Link v1.1.3 Table B.15
+ * @param CycleTimeUs Cycle time in microseconds
+ * @return uint8_t  Encoded Cycle Time according to spec
+ */
+uint8_t cyctime_encode(uint32_t cycletime_us);

samples/buzzer/CMakeLists.txt

@@ -0,0 +1,13 @@
+# Copyright (c) 2024 Victor Chavez
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+cmake_minimum_required(VERSION 3.20.0)
+set(IOLINK_MODULE ${CMAKE_CURRENT_SOURCE_DIR}/../..)
+set(ZEPHYR_EXTRA_MODULES ${IOLINK_MODULE})
+find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
+project(iolm_demo)
+
+target_sources(app PRIVATE src/iolink_smi.c
+                            src/iolink_handler.c
+                            src/demo.c
+)

samples/read_pd/CMakeLists.txt

@@ -0,0 +1,10 @@
+# Copyright (c) 2024 Victor Chavez
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+cmake_minimum_required(VERSION 3.20.0)
+set(IOLINK_MODULE ${CMAKE_CURRENT_SOURCE_DIR}/../..)
+set(ZEPHYR_EXTRA_MODULES ${IOLINK_MODULE})
+find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
+project(iolm_demo)
+
+target_sources(app PRIVATE src/main.c)

samples/read_pd/README.md

@@ -0,0 +1,21 @@
+# Zephyr IOLM Read Process Data Input
+
+A sample application that demonstrates how to read PDIn from an IO-Link device
+
+
+## Build and Flash
+
+```
+git clone --recursive https://github.com/vChavezB/zephyr-iolm/
+cd YOUR_ZEPHYR_WEST_WORKSPACE
+west build zephyr-iolm/samples/read_pd -b YOUR_BOARD
+west flash
+```
+
+Where:
+
+- YOUR_ZEPHYR_WEST_WORKSPACE: Is the installation of your Zephyr SDK (i.e. `west init ..`). 
+  Note: This has only been tested with Zephyr revision v3.6.99 commit `34c84eccec0508b16f5001b20fa369f387d856df`
+- `YOUR_BOARD`: `esp32`, `nrf52833dk_nrf52833`
+
+## Expected Output

samples/read_pd/boards/esp32_devkitc_wrover_procpu.overlay

@@ -0,0 +1,16 @@
+&uart0 {
+	current-speed = <460800>;
+};
+
+&spi2 {
+	status = "okay";
+	cs-gpios = <&gpio0 19 GPIO_ACTIVE_LOW>;
+    max:maxim14819@0 {
+		spi-max-frequency = <8000000>;
+		status = "okay";
+		irq-gpios = <&gpio0 18 GPIO_ACTIVE_LOW>;
+        compatible = "iolm,maxim14819";
+        reg = <0x00>;
+		chip-address = <0x00>;
+    };
+};

samples/read_pd/boards/nrf52833dk_nrf52833.overlay

@@ -0,0 +1,39 @@
+&uart0 {
+	current-speed = <460800>;
+};
+
+&pinctrl {
+
+	spi1_default: spi1_default {
+		group1 {
+			psels = <NRF_PSEL(SPIM_SCK, 0, 31)>,
+				<NRF_PSEL(SPIM_MOSI, 0, 30)>,
+				<NRF_PSEL(SPIM_MISO, 0,29)>;
+		};
+	};
+
+	spi1_sleep: spi1_sleep {
+		group1 {
+			psels = <NRF_PSEL(SPIM_SCK, 0, 31)>,
+				<NRF_PSEL(SPIM_MOSI, 0, 30)>,
+				<NRF_PSEL(SPIM_MISO, 0, 29)>;
+			low-power-enable;
+		};
+	};
+};
+
+//#include <iolm/maxim14819.h>
+
+&spi1 {
+	status = "okay";
+	pinctrl-names = "default", "sleep";
+	cs-gpios = <&gpio1 9 GPIO_ACTIVE_LOW>;
+    max:maxim14819@0 {
+		spi-max-frequency = <10000000>;
+		status = "okay";
+		irq-gpios = <&gpio0 28 GPIO_ACTIVE_LOW>;
+        compatible = "iolm,maxim14819";
+        reg = <0x00>;
+		chip-address = <0x00>;
+    };
+};

samples/read_pd/prj.conf

@@ -0,0 +1,13 @@
+# Copyright (c) 2024 Victor Chavez
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+CONFIG_THREAD_NAME=y
+CONFIG_LOG=y
+CONFIG_IOLINK_LOG_LEVEL_DBG=y
+CONFIG_ASSERT=y
+CONFIG_MINIMAL_LIBC=y
+#CONFIG_LOG_BUFFER_SIZE=16384
+CONFIG_IOLINK=y
+CONFIG_IOLINK_MAIN_STACK_SIZE=1024
+CONFIG_IOLINK_DL_STACK_SIZE=1024
+CONFIG_IOLINK_NUM_PORTS=2

samples/read_pd/src/main.c

@@ -0,0 +1,14 @@
+/* Copyright (c) 2024 Victor Chavez
+   SPDX-License-Identifier: GPL-3.0-or-later
+*/
+#include <iolm/iolm.h>
+#include <zephyr/kernel.h>
+
+int main(void)
+{
+   int rc = iolm_init();
+   if (rc != 0) {
+      printk("Failed to initialize IO-Link Master: %d\n",rc);
+   }
+   return rc;
+}