Mercurial > brewboard / changeset

--- a/components/esp32-owb/doc/.gitignore	Mon Jun 24 17:05:20 2024 +0200
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,3 +0,0 @@
-html/
-latex/
-

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/components/esp32-owb/include/owb_rmt_bus_symbols.h	Mon Jun 24 17:09:07 2024 +0200
@@ -0,0 +1,42 @@
+/**
+ * Copyright (c) 2023 mjcross
+ *
+ * SPDX-License-Identifier: MIT
+**/
+
+#include "owb_rmt_bus_timings.h"
+
+// RMT transmit channel symbols for the onewire bus signals and conditions
+//
+
+// basic bus levels
+// ----------------
+// note: we configure the transmit channel to be hardware inverted,
+//       so that the bus initialises in the 'released' state
+#define OWB_RMT_BUS_ASSERTED 1
+#define OWB_RMT_BUS_RELEASED 0
+
+// bus symbols as `rmt_symbol_word_t`
+// ----------------------------------
+
+// send 'zero' bit
+#define OWB_RMT_SYMBOL_0BIT { \
+    .level0 = OWB_RMT_BUS_ASSERTED, \
+    .duration0 = OWB_TIMING_PARAM_C, \
+    .level1 = OWB_RMT_BUS_RELEASED, \
+    .duration1 = OWB_TIMING_PARAM_D }
+
+// send 'one' bit
+#define OWB_RMT_SYMBOL_1BIT { \
+    .level0 = OWB_RMT_BUS_ASSERTED, \
+    .duration0 = OWB_TIMING_PARAM_A, \
+    .level1 = OWB_RMT_BUS_RELEASED, \
+    .duration1 = OWB_TIMING_PARAM_B }
+
+// send bus reset 
+#define OWB_RMT_SYMBOL_RESET { \
+    .level0 = OWB_RMT_BUS_ASSERTED, \
+    .duration0 = OWB_TIMING_PARAM_H, \
+    .level1 = OWB_RMT_BUS_RELEASED, \
+    .duration1 = OWB_TIMING_PARAM_I + OWB_TIMING_PARAM_J }
+

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/components/esp32-owb/include/owb_rmt_bus_timings.h	Mon Jun 24 17:09:07 2024 +0200
@@ -0,0 +1,20 @@
+// onewire bus master timings
+
+// standard rate master timings recommended in the 1-Wire specification
+// the values below are the ones recommended by the specification.
+
+// for the meaning of each parameter, see the following document:
+// https://www.analog.com/en/technical-articles/1wire-communication-through-software.html
+
+// all values in microsec
+#define OWB_TIMING_PARAM_A  6 
+#define OWB_TIMING_PARAM_B  64
+#define OWB_TIMING_PARAM_C  60
+#define OWB_TIMING_PARAM_D  10
+#define OWB_TIMING_PARAM_E  9
+#define OWB_TIMING_PARAM_F  55
+#define OWB_TIMING_PARAM_G  0
+#define OWB_TIMING_PARAM_H  480
+#define OWB_TIMING_PARAM_I  70
+#define OWB_TIMING_PARAM_J  410
+

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/components/esp32-owb/library.json	Mon Jun 24 17:09:07 2024 +0200
@@ -0,0 +1,30 @@
+{
+  "name": "esp32-owb",
+  "keywords": "onewire, 1-wire, bus, sensor, temperature",
+  "description": "ESP32-compatible C component for the Maxim Integrated 1-Wire protocol.",
+  "repository":
+  {
+    "type": "git",
+    "url": "https://github.com/DavidAntliff/esp32-owb.git"
+  },
+  "authors":
+  [
+    {
+      "name": "David Antliff",
+      "url": "https://github.com/DavidAntliff",
+      "maintainer": true
+    },
+    {
+      "name": "Chris Morgan",
+      "url": "https://github.com/chmorgan"
+    }
+  ],
+  "version": "0.1",
+  "frameworks": "espidf",
+  "platforms": "espressif32",
+  "build": {
+    "flags": [
+        "-I include/"
+    ]
+  }
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main/idf_component.yml	Mon Jun 24 17:09:07 2024 +0200
@@ -0,0 +1,17 @@
+## IDF Component Manager Manifest File
+dependencies:
+  espressif/expat: "^2.6.2"
+  ## Required IDF version
+  idf:
+    version: ">=4.1.0"
+  # # Put list of dependencies here
+  # # For components maintained by Espressif:
+  # component: "~1.0.0"
+  # # For 3rd party components:
+  # username/component: ">=1.0.0,<2.0.0"
+  # username2/component2:
+  #   version: "~1.0.0"
+  #   # For transient dependencies `public` flag can be set.
+  #   # `public` flag doesn't have an effect dependencies of the `main` component.
+  #   # All dependencies of `main` are public by default.
+  #   public: true