style(llcc68): apply shared clang-format

Add a .clang-format file to the LLCC68 submodule so it can be formatted consistently when edited or checked out independently from the parent repository.

Reformat the tracked C and C++ driver sources with the shared style configuration.

.clang-format

@@ -0,0 +1,25 @@
+# C++ specific configuration (akin to Google's C++ style)
+# https://clang.llvm.org/docs/ClangFormatStyleOptions.html#adding-additional-style-options
+---
+Language: Cpp
+BasedOnStyle: LLVM
+UseTab: ForContinuationAndIndentation
+IndentWidth: 4
+TabWidth: 4
+AccessModifierOffset: -4
+ColumnLimit: 0
+NamespaceIndentation: Inner
+FixNamespaceComments: false
+AllowShortIfStatementsOnASingleLine: WithoutElse
+AllowShortLoopsOnASingleLine: true
+AllowShortBlocksOnASingleLine: Empty
+IndentCaseLabels: false
+SortIncludes: Never
+AlignConsecutiveMacros: AcrossEmptyLines
+AlignConsecutiveAssignments: Consecutive
+BreakStringLiterals: true
+LineEnding: LF
+MaxEmptyLinesToKeep: 2
+BreakBeforeBraces: Attach
+InsertBraces: true
+BreakAfterAttributes: Always

include/llcc68_definitions.hpp

@@ -1143,7 +1143,8 @@ namespace llcc68 = app::driver::llcc68;
 }
 
 namespace std {
-template <> struct is_error_code_enum<app::driver::llcc68::Errc> : true_type {};
+template <>
+struct is_error_code_enum<app::driver::llcc68::Errc> : true_type {};
 } // namespace std
 
 #endif /* ECC594CF_EDF0_42B5_8518_0EB3B3583727 */

src/llcc68.cpp

@@ -108,17 +108,17 @@ error_code LLCC68::init() {
 
 // Internal helpers (TU-local)
 namespace {
-// Max payload the radio supports and buffer sizing helpers
+	// Max payload the radio supports and buffer sizing helpers
-constexpr size_t kMaxPayload = 32;
+	constexpr size_t kMaxPayload = 32;
 
-constexpr uint64_t ceil_div_u64(uint64_t numerator, uint64_t denominator) {
+	constexpr uint64_t ceil_div_u64(uint64_t numerator, uint64_t denominator) {
 		if (denominator == 0) {
 			return 0;
 		}
 		return numerator / denominator + (numerator % denominator == 0 ? 0 : 1);
-}
+	}
 
-constexpr uint32_t lora_bw_hz(LoRaBandwidth bw) {
+	constexpr uint32_t lora_bw_hz(LoRaBandwidth bw) {
 		switch (bw) {
 		case LoRaBandwidth::BW_7_8:
 			return 7'810;
@@ -142,9 +142,9 @@ constexpr uint32_t lora_bw_hz(LoRaBandwidth bw) {
 			return 500'000;
 		}
 		return 0;
-}
+	}
 
-error_code command_status_to_error(status_t st) {
+	error_code command_status_to_error(status_t st) {
 		switch (st.command_status) {
 		case CommandStatus::FAILURE_TO_EXECUTE_COMMAND:
 			return make_error_code(Errc::FailureToExecuteCommand);
@@ -155,9 +155,9 @@ error_code command_status_to_error(status_t st) {
 		default:
 			return {};
 		}
-}
+	}
 
-int wait_for_not_busy(const gpio_dt_spec &busy_gpio, uint16_t timeout_ms) {
+	int wait_for_not_busy(const gpio_dt_spec &busy_gpio, uint16_t timeout_ms) {
 		if (not device_is_ready(busy_gpio.port)) {
 			return -ENODEV;
 		}
@@ -169,7 +169,7 @@ int wait_for_not_busy(const gpio_dt_spec &busy_gpio, uint16_t timeout_ms) {
 			k_busy_wait(50); // ~50 us poll interval
 		}
 		return 0;
-}
+	}
 } // namespace
 
 expected<unit, error_code> LLCC68::set_rf_switch_state(RfSwitchState state) {
@@ -186,6 +186,7 @@ expected<unit, error_code> LLCC68::set_rf_switch_state(RfSwitchState state) {
 	};
 
 	switch (config().rf_switch_mode) {
+	case LLCC68_RF_SWITCH_DIO2_SINGLE:
 	case LLCC68_RF_SWITCH_NONE:
 		return unit{};
 	case LLCC68_RF_SWITCH_GPIO_COMPLEMENTARY: {
@@ -205,10 +206,6 @@ expected<unit, error_code> LLCC68::set_rf_switch_state(RfSwitchState state) {
 		APP_RADIO_RETURN_ERR(r);
 		return set_gpio(*rx, state == RfSwitchState::RX ? 1 : 0);
 	}
-  case LLCC68_RF_SWITCH_DIO2_SINGLE:
-    if (auto rx = rx_enable_gpio()) {
-      return set_gpio(*rx, 1);
-    }
 		return unit{};
 	default:
 		return ue(-EINVAL);
@@ -701,9 +698,14 @@ expected<ChipType, error_code> LLCC68::hal_get_chip_type() {
 
 expected<unit, error_code> LLCC68::set_dio_irq_params(irq_params_t params) {
 	const uint8_t data[8] = {
-      params.irqMask.msb(),  params.irqMask.lsb(),  params.dio1Mask.msb(),
+		params.irqMask.msb(),
-      params.dio1Mask.lsb(), params.dio2Mask.msb(), params.dio2Mask.lsb(),
+		params.irqMask.lsb(),
-      params.dio3Mask.msb(), params.dio3Mask.lsb(),
+		params.dio1Mask.msb(),
+		params.dio1Mask.lsb(),
+		params.dio2Mask.msb(),
+		params.dio2Mask.lsb(),
+		params.dio3Mask.msb(),
+		params.dio3Mask.lsb(),
 	};
 	return write_stream(RADIOLIB_SX126X_CMD_SET_DIO_IRQ_PARAMS, data);
 }