Init commit with many years of arduino sketches and projects. I dont know if the esp8266 includes much, but there are also libraries. I hope they dont have crazy automatic versioning through the Arduino IDE.

Projects/libraries/Installed_libs/Adafruit_BLE_UART/utility/hal/hal_aci_tl.h

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+/* Copyright (c) 2009 Nordic Semiconductor. All Rights Reserved.
+ *
+ * The information contained herein is property of Nordic Semiconductor ASA.
+ * Terms and conditions of usage are described in detail in NORDIC
+ * SEMICONDUCTOR STANDARD SOFTWARE LICENSE AGREEMENT. 
+ *
+ * Licensees are granted free, non-transferable use of the information. NO
+ * WARRANTY of ANY KIND is provided. This heading must NOT be removed from
+ * the file.
+ *
+ * $LastChangedRevision$
+ */ 
+
+/** @file
+ * @brief Interface for hal_aci_tl.
+ */
+ 
+/** @defgroup hal_aci_tl hal_aci_tl
+@{
+@ingroup hal
+ 
+@brief Module for the ACI Transport Layer interface
+@details This module is responsible for sending and receiving messages over the ACI interface of the nRF8001 chip.
+ The hal_aci_tl_send_cmd() can be called directly to send ACI commands.
+
+
+The RDYN line is hooked to an interrupt on the MCU when the level is low.
+The SPI master clocks in the interrupt context.
+The ACI Command is taken from the head of the command queue is sent over the SPI
+and the received ACI event is placed in the tail of the event queue.
+
+*/
+ 
+#ifndef HAL_ACI_TL_H__
+#define HAL_ACI_TL_H__
+
+#include "hal_platform.h"
+
+#ifndef HAL_ACI_MAX_LENGTH
+#define HAL_ACI_MAX_LENGTH 31
+#endif //HAL_ACI_MAX_LENGTH
+
+#define ACI_QUEUE_SIZE  8
+
+/** Data type for ACI commands and events */
+typedef struct hal_aci_data_t{
+  uint8_t status_byte;
+  uint8_t buffer[HAL_ACI_MAX_LENGTH+1];
+} hal_aci_data_t;
+
+
+/** @brief Message received hook function.
+ *  @details A hook function that must be implemented by the client of this module. 
+ * The function will be called by this module when a new message has been received from the nRF8001.
+ *  @param received_msg Pointer to a structure containing a pointer to the received data.
+ */
+extern void hal_aci_tl_msg_rcv_hook(hal_aci_data_t *received_msg);
+
+/** ACI Transport Layer configures inputs/outputs.
+ */
+void hal_aci_tl_io_config(void);
+
+
+/** ACI Transport Layer initialization.
+ */
+void hal_aci_tl_init(void);
+
+/**@brief Sends an ACI command to the radio.
+ *  @details
+ *  This function sends an ACI command to the radio. This will memorize the pointer of the message to send and 
+ *  lower the request line. When the device lowers the ready line, @ref hal_aci_tl_poll_rdy_line() will send the data.
+ *  @param aci_buffer Pointer to the message to send.
+ *  @return True if the send is started successfully, false if a transaction is already running.
+ */
+bool hal_aci_tl_send(hal_aci_data_t *aci_buffer);
+
+
+/** @brief Check for pending transaction.
+ *  @details 
+ *  Call this function from the main context at regular intervals to check if the nRF8001 RDYN line indicates a pending transaction.
+ *  If a transaction is pending, this function will treat it and call the receive hook.
+ */
+void hal_aci_tl_poll_rdy_line(void);
+
+hal_aci_data_t * hal_aci_tl_poll_get(void);
+
+bool hal_aci_tl_event_get(hal_aci_data_t *p_aci_data);
+
+/** @brief Flush the ACI command Queue and the ACI Event Queue
+ *  @details
+ *  Call this function in the main thread
+*/
+void m_aci_q_flush(void);
+
+/** @brief Enable debug printing of all ACI commands sent and ACI events received
+ *  @details
+ *  when the enable parameter is true. The debug printing is enabled on the Serial.
+ *  When the enable parameter is false. The debug printing is disabled on the Serial.
+ *  By default the debug printing is disabled.
+*/
+void hal_aci_debug_print(bool enable);
+
+#endif // HAL_ACI_TL_H__
+/** @} */
+
+
+
+

Projects/libraries/Installed_libs/Adafruit_BLE_UART/utility/hal/hal_io.h

@@ -0,0 +1,71 @@
+/* Copyright (c) 2009 Nordic Semiconductor. All Rights Reserved.
+ *
+ * The information contained herein is property of Nordic Semiconductor ASA.
+ * Terms and conditions of usage are described in detail in NORDIC
+ * SEMICONDUCTOR STANDARD SOFTWARE LICENSE AGREEMENT. 
+ *
+ * Licensees are granted free, non-transferable use of the information. NO
+ * WARRANTY of ANY KIND is provided. This heading must NOT be removed from
+ * the file.
+ *
+ * $LastChangedRevision$
+ */ 
+
+/** @file
+*/
+
+/** @defgroup hal_io hal_io
+ * @{
+ * @ingroup hal
+ * @brief Macros input/output management
+*/
+
+#include "hal_platform.h"
+
+#ifndef HAL_IO_H__
+#define HAL_IO_H__
+
+#define HAL_IO_P00 PIN0
+#define HAL_IO_P01 PIN1
+#define HAL_IO_P02 PIN2
+#define HAL_IO_P03 PIN3
+#define HAL_IO_P04 PIN4
+#define HAL_IO_P05 PIN5
+#define HAL_IO_P06 PIN6
+#define HAL_IO_P07 PIN7
+#define HAL_IO_P08 PIN8
+#define HAL_IO_P09 PIN9
+
+#define HAL_IO_OUTPUT OUTPUT
+#define HAL_IO_INPUT INPUT
+
+/**@brief Macro to configure an I/O.
+ *  @details
+ *  This macro configures a given I/O to input or output with pullup/buffer configuration.
+ *  @param io_name I/O to configure.
+ *  @param is_input Indicate if the I/O is to be set as an input.
+ *  @param io_mode Pull resistor and buffer configuration (must be HAL_IO_OUTPUT_NORMAL_STRENGTH, HAL_IO_OUTPUT_HIGH_STRENGTH, HAL_IO_INPUT_BUF_ON_NO_PULL,
+ *  HAL_IO_INPUT_BUF_ON_PULL_DOWN, HAL_IO_INPUT_BUF_ON_PULL_UP, or HAL_IO_INPUT_BUF_OFF).
+*/
+#define HAL_IO_CONFIG(io_name, is_input, io_mode) pinMode(io_name, is_input)
+
+/**@brief Macro to set an output.
+ *  @details
+ *  This macro sets the given output to the given level (1 -> high, 0 -> low).
+ *  @param io_name Output to change.
+ *  @param io_state Level to set.
+*/
+#define HAL_IO_SET_STATE(io_name, io_state) digitalWrite(io_name, io_state) 
+
+/**@brief Macro that reads the current state of an input.
+ *  @details
+ *  This macro reads the current state of a logical input.
+ *  @param io_name Input to read.
+ *  @return Input state level (1 if high, 0 if low).
+*/
+#define HAL_IO_READ(io_name) digitalRead(io_name)
+
+
+#endif //HAL_IO_H__
+
+/** @} */