update formatting

.clang-format

@@ -0,0 +1,225 @@
+---
+Language:        Cpp
+# BasedOnStyle:  LLVM
+AccessModifierOffset: -2
+AlignAfterOpenBracket: Align
+AlignArrayOfStructures: None
+AlignConsecutiveAssignments:
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+  Enabled:         false
+  AcrossEmptyLines: false
+  AcrossComments:  false
+  AlignCompound:   false
+  PadOperators:    false
+AlignConsecutiveMacros:
+  Enabled:         false
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+  AcrossComments:  false
+  AlignCompound:   false
+  PadOperators:    false
+AlignEscapedNewlines: Right
+AlignOperands:   Align
+AlignTrailingComments:
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+AllowAllParametersOfDeclarationOnNextLine: true
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+AllowShortEnumsOnASingleLine: true
+AllowShortFunctionsOnASingleLine: All
+AllowShortIfStatementsOnASingleLine: Never
+AllowShortLambdasOnASingleLine: All
+AllowShortLoopsOnASingleLine: false
+AlwaysBreakAfterDefinitionReturnType: None
+AlwaysBreakAfterReturnType: None
+AlwaysBreakBeforeMultilineStrings: false
+AlwaysBreakTemplateDeclarations: MultiLine
+AttributeMacros:
+  - __capability
+BinPackArguments: true
+BinPackParameters: true
+BitFieldColonSpacing: Both
+BraceWrapping:
+  AfterCaseLabel:  false
+  AfterClass:      false
+  AfterControlStatement: Never
+  AfterEnum:       false
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+  SplitEmptyNamespace: true
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+BreakBeforeConceptDeclarations: Always
+BreakBeforeBraces: Attach
+BreakBeforeInlineASMColon: OnlyMultiline
+BreakBeforeTernaryOperators: true
+BreakConstructorInitializers: BeforeColon
+BreakInheritanceList: BeforeColon
+BreakStringLiterals: true
+ColumnLimit:     80
+CommentPragmas:  '^ IWYU pragma:'
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+DerivePointerAlignment: false
+DisableFormat:   false
+EmptyLineAfterAccessModifier: Never
+EmptyLineBeforeAccessModifier: LogicalBlock
+ExperimentalAutoDetectBinPacking: false
+FixNamespaceComments: true
+ForEachMacros:
+  - foreach
+  - Q_FOREACH
+  - BOOST_FOREACH
+IfMacros:
+  - KJ_IF_MAYBE
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+IncludeCategories:
+  - Regex:           '^"(llvm|llvm-c|clang|clang-c)/'
+    Priority:        2
+    SortPriority:    0
+    CaseSensitive:   false
+  - Regex:           '^(<|"(gtest|gmock|isl|json)/)'
+    Priority:        3
+    SortPriority:    0
+    CaseSensitive:   false
+  - Regex:           '.*'
+    Priority:        1
+    SortPriority:    0
+    CaseSensitive:   false
+IncludeIsMainRegex: '(Test)?$'
+IncludeIsMainSourceRegex: ''
+IndentAccessModifiers: false
+IndentCaseBlocks: false
+IndentCaseLabels: false
+IndentExternBlock: AfterExternBlock
+IndentGotoLabels: true
+IndentPPDirectives: None
+IndentRequiresClause: true
+IndentWidth:     4
+IndentWrappedFunctionNames: false
+InsertBraces:    false
+InsertNewlineAtEOF: false
+InsertTrailingCommas: None
+IntegerLiteralSeparator:
+  Binary:          0
+  BinaryMinDigits: 0
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+  Hex:             0
+  HexMinDigits:    0
+JavaScriptQuotes: Leave
+JavaScriptWrapImports: true
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+LambdaBodyIndentation: Signature
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+RemoveSemicolon: false
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+RequiresExpressionIndentation: OuterScope
+SeparateDefinitionBlocks: Leave
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+SpaceAfterTemplateKeyword: true
+SpaceAroundPointerQualifiers: Default
+SpaceBeforeAssignmentOperators: true
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+SpaceBeforeCpp11BracedList: false
+SpaceBeforeCtorInitializerColon: true
+SpaceBeforeInheritanceColon: true
+SpaceBeforeParens: ControlStatements
+SpaceBeforeParensOptions:
+  AfterControlStatements: true
+  AfterForeachMacros: true
+  AfterFunctionDefinitionName: false
+  AfterFunctionDeclarationName: false
+  AfterIfMacros:   true
+  AfterOverloadedOperator: false
+  AfterRequiresInClause: false
+  AfterRequiresInExpression: false
+  BeforeNonEmptyParentheses: false
+SpaceBeforeRangeBasedForLoopColon: true
+SpaceBeforeSquareBrackets: false
+SpaceInEmptyBlock: false
+SpaceInEmptyParentheses: false
+SpacesBeforeTrailingComments: 1
+SpacesInAngles:  Never
+SpacesInConditionalStatement: false
+SpacesInContainerLiterals: true
+SpacesInCStyleCastParentheses: false
+SpacesInLineCommentPrefix:
+  Minimum:         1
+  Maximum:         -1
+SpacesInParentheses: false
+SpacesInSquareBrackets: false
+Standard:        Latest
+StatementAttributeLikeMacros:
+  - Q_EMIT
+StatementMacros:
+  - Q_UNUSED
+  - QT_REQUIRE_VERSION
+TabWidth:        8
+UseTab:          Never
+WhitespaceSensitiveMacros:
+  - BOOST_PP_STRINGIZE
+  - CF_SWIFT_NAME
+  - NS_SWIFT_NAME
+  - PP_STRINGIZE
+  - STRINGIZE
+...
+

esp_ws28xx.c

@@ -1,35 +1,43 @@
 #include "esp_ws28xx.h"
 
-uint16_t* dma_buffer;
+uint16_t *dma_buffer;
-CRGB* ws28xx_pixels;
+CRGB *ws28xx_pixels;
 static int n_of_leds, reset_delay, dma_buf_size;
 led_strip_model_t led_model;
 
-static spi_settings_t spi_settings = {.host = SPI2_HOST,
+static spi_settings_t spi_settings = {
-                                      .dma_chan = SPI_DMA_CH_AUTO,
+    .host = SPI2_HOST,
-                                      .buscfg =
+    .dma_chan = SPI_DMA_CH_AUTO,
-                                          {
+    .buscfg =
-                                              .miso_io_num = -1,
+        {
-                                              .sclk_io_num = -1,
+            .miso_io_num = -1,
-                                              .quadwp_io_num = -1,
+            .sclk_io_num = -1,
-                                              .quadhd_io_num = -1,
+            .quadwp_io_num = -1,
-                                          },
+            .quadhd_io_num = -1,
-                                      .devcfg = {
+        },
-                                          .clock_speed_hz = 3.2 * 1000 * 1000, // Clock out at 3.2 MHz
+    .devcfg =
-                                          .mode = 0,                           // SPI mode 0
+        {
-                                          .spics_io_num = -1,                  // CS pin
+            .clock_speed_hz = 3.2 * 1000 * 1000, // Clock out at 3.2 MHz
-                                          .queue_size = 1,
+            .mode = 0,                           // SPI mode 0
-                                          .command_bits = 0,
+            .spics_io_num = -1,                  // CS pin
-                                          .address_bits = 0,
+            .queue_size = 1,
-                                          .flags = SPI_DEVICE_TXBIT_LSBFIRST,
+            .command_bits = 0,
-                                      }};
+            .address_bits = 0,
+            .flags = SPI_DEVICE_TXBIT_LSBFIRST,
+        },
+};
 
-esp_err_t ws28xx_init(int pin, led_strip_model_t model, int num_of_leds, CRGB** led_buffer_ptr) {
+static const uint16_t timing_bits[16] = {
+    0x1111, 0x7111, 0x1711, 0x7711, 0x1171, 0x7171, 0x1771, 0x7771,
+    0x1117, 0x7117, 0x1717, 0x7717, 0x1177, 0x7177, 0x1777, 0x7777};
+
+esp_err_t ws28xx_init(int pin, led_strip_model_t model, int num_of_leds,
+                      CRGB **led_buffer_ptr) {
     esp_err_t err = ESP_OK;
     n_of_leds = num_of_leds;
     led_model = model;
-    dma_buf_size =
+    // 12 bytes for each led + bytes for initial zero and reset state
-        n_of_leds * 12 + (reset_delay + 1) * 2; // 12 bytes for each led + bytes for initial zero and reset state
+    dma_buf_size = n_of_leds * 12 + (reset_delay + 1) * 2;
     ws28xx_pixels = malloc(sizeof(CRGB) * n_of_leds);
     if (ws28xx_pixels == NULL) {
         return ESP_ERR_NO_MEM;
@@ -37,20 +45,23 @@ esp_err_t ws28xx_init(int pin, led_strip_model_t model, int num_of_leds, CRGB**
     *led_buffer_ptr = ws28xx_pixels;
     spi_settings.buscfg.mosi_io_num = pin;
     spi_settings.buscfg.max_transfer_sz = dma_buf_size;
-    err = spi_bus_initialize(spi_settings.host, &spi_settings.buscfg, spi_settings.dma_chan);
+    err = spi_bus_initialize(spi_settings.host, &spi_settings.buscfg,
+                             spi_settings.dma_chan);
     if (err != ESP_OK) {
         free(ws28xx_pixels);
         return err;
     }
-    err = spi_bus_add_device(spi_settings.host, &spi_settings.devcfg, &spi_settings.spi);
+    err = spi_bus_add_device(spi_settings.host, &spi_settings.devcfg,
+                             &spi_settings.spi);
     if (err != ESP_OK) {
         free(ws28xx_pixels);
         return err;
     }
-    reset_delay = (model == WS2812B) ? 3 : 30; // insrease if something breaks. values are less that
+    // Insrease if something breaks. values are less than recommended in
-    // recommended in datasheets but seem stable
+    // datasheets but seem stable
-    dma_buffer = heap_caps_malloc(dma_buf_size,
+    reset_delay = (model == WS2812B) ? 3 : 30;
-                                  MALLOC_CAP_DMA); // Critical to be DMA memory.
+    // Critical to be DMA memory.
+    dma_buffer = heap_caps_malloc(dma_buf_size, MALLOC_CAP_DMA);
     if (dma_buffer == NULL) {
         free(ws28xx_pixels);
         return ESP_ERR_NO_MEM;
@@ -65,15 +76,13 @@ void ws28xx_fill_all(CRGB color) {
 }
 
 esp_err_t ws28xx_update() {
-    uint16_t timing_bits[16] = {0x1111, 0x7111, 0x1711, 0x7711, 0x1171, 0x7171, 0x1771, 0x7771,
-                                0x1117, 0x7117, 0x1717, 0x7717, 0x1177, 0x7177, 0x1777, 0x7777};
     esp_err_t err;
     int n = 0;
     memset(dma_buffer, 0, dma_buf_size);
-
     dma_buffer[n++] = 0;
     for (int i = 0; i < n_of_leds; i++) {
-        uint32_t temp = ws28xx_pixels[i].num; // Data you want to write to each LEDs
+        // Data you want to write to each LEDs
+        uint32_t temp = ws28xx_pixels[i].num;
         if (led_model == WS2815) {
             // Red
             dma_buffer[n++] = timing_bits[0x0f & (temp >> 4)];

esp_ws28xx.h

@@ -1,9 +1,9 @@
 #ifndef MAIN_ESP_WS28XX_H_
 #define MAIN_ESP_WS28XX_H_
-#include <stdio.h>
-#include <string.h>
 #include "driver/gpio.h"
 #include "driver/spi_master.h"
+#include <stdio.h>
+#include <string.h>
 
 typedef struct {
     union {
@@ -42,7 +42,8 @@ typedef enum {
     WS2815,
 } led_strip_model_t;
 
-esp_err_t ws28xx_init(int pin, led_strip_model_t model, int num_of_leds, CRGB** led_buffer_ptr);
+esp_err_t ws28xx_init(int pin, led_strip_model_t model, int num_of_leds,
+                      CRGB **led_buffer_ptr);
 void ws28xx_fill_all(CRGB color);
 esp_err_t ws28xx_update();