Reem M
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Diff: easy-connect/atmel-rf-driver/source/NanostackRfPhyAtmel.cpp
- Revision:
- 0:a49e37a83a7a
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/easy-connect/atmel-rf-driver/source/NanostackRfPhyAtmel.cpp Mon Apr 15 08:30:22 2019 +0000
@@ -0,0 +1,2479 @@
+/*
+ * Copyright (c) 2014-2015 ARM Limited. All rights reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ * Licensed under the Apache License, Version 2.0 (the License); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an AS IS BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include <string.h>
+#include "platform/arm_hal_interrupt.h"
+#include "nanostack/platform/arm_hal_phy.h"
+#include "ns_types.h"
+#include "NanostackRfPhyAtmel.h"
+#include "randLIB.h"
+#include "AT86RFReg.h"
+#include "nanostack/platform/arm_hal_phy.h"
+#include "toolchain.h"
+
+/*Worst case sensitivity*/
+#define RF_DEFAULT_SENSITIVITY -88
+/*Run calibration every 5 minutes*/
+#define RF_CALIBRATION_INTERVAL 6000000
+/*Wait ACK for 2.5ms*/
+#define RF_ACK_WAIT_DEFAULT_TIMEOUT 50
+/*Base CCA backoff (50us units) - substitutes for Inter-Frame Spacing*/
+#define RF_CCA_BASE_BACKOFF 13 /* 650us */
+/*CCA random backoff (50us units)*/
+#define RF_CCA_RANDOM_BACKOFF 51 /* 2550us */
+
+#define RF_MTU 127
+
+#define RF_PHY_MODE OQPSK_SIN_250
+
+/*Radio RX and TX state definitions*/
+#define RFF_ON 0x01
+#define RFF_RX 0x02
+#define RFF_TX 0x04
+#define RFF_CCA 0x08
+#define RFF_PROT 0x10
+
+typedef enum
+{
+ RF_MODE_NORMAL = 0,
+ RF_MODE_SNIFFER = 1,
+ RF_MODE_ED = 2
+}rf_mode_t;
+
+/*Atmel RF Part Type*/
+typedef enum
+{
+ ATMEL_UNKNOW_DEV = 0,
+ ATMEL_AT86RF212,
+ ATMEL_AT86RF231, // No longer supported (doesn't give ED+status on frame read)
+ ATMEL_AT86RF233
+}rf_trx_part_e;
+
+/*Atmel RF states*/
+typedef enum
+{
+ NOP = 0x00,
+ BUSY_RX = 0x01,
+ RF_TX_START = 0x02,
+ FORCE_TRX_OFF = 0x03,
+ FORCE_PLL_ON = 0x04,
+ RX_ON = 0x06,
+ TRX_OFF = 0x08,
+ PLL_ON = 0x09,
+ BUSY_RX_AACK = 0x11,
+ SLEEP = 0x0F,
+ RX_AACK_ON = 0x16,
+ TX_ARET_ON = 0x19
+}rf_trx_states_t;
+
+static const uint8_t *rf_tx_data; // Points to Nanostack's buffer
+static uint8_t rf_tx_length;
+/*ACK wait duration changes depending on data rate*/
+static uint16_t rf_ack_wait_duration = RF_ACK_WAIT_DEFAULT_TIMEOUT;
+
+static int8_t rf_sensitivity = RF_DEFAULT_SENSITIVITY;
+static rf_mode_t rf_mode = RF_MODE_NORMAL;
+static uint8_t radio_tx_power = 0x00; // Default to +4dBm
+static uint8_t rf_phy_channel = 12;
+static uint8_t rf_tuned = 1;
+static uint8_t rf_use_antenna_diversity = 0;
+static int16_t expected_ack_sequence = -1;
+static uint8_t rf_rx_mode = 0;
+static uint8_t rf_flags = 0;
+static int8_t rf_radio_driver_id = -1;
+static phy_device_driver_s device_driver;
+static uint8_t mac_tx_handle = 0;
+
+/* Channel configurations for 2.4 and sub-GHz */
+static const phy_rf_channel_configuration_s phy_24ghz = {2405000000U, 5000000U, 250000U, 16U, M_OQPSK};
+static const phy_rf_channel_configuration_s phy_subghz = {868300000U, 2000000U, 250000U, 11U, M_OQPSK};
+
+static const phy_device_channel_page_s phy_channel_pages[] = {
+ { CHANNEL_PAGE_0, &phy_24ghz},
+ { CHANNEL_PAGE_2, &phy_subghz},
+ { CHANNEL_PAGE_0, NULL}
+};
+
+/**
+ * RF output power write
+ *
+ * \brief TX power has to be set before network start.
+ *
+ * \param power
+ * AT86RF233
+ * 0 = 4 dBm
+ * 1 = 3.7 dBm
+ * 2 = 3.4 dBm
+ * 3 = 3 dBm
+ * 4 = 2.5 dBm
+ * 5 = 2 dBm
+ * 6 = 1 dBm
+ * 7 = 0 dBm
+ * 8 = -1 dBm
+ * 9 = -2 dBm
+ * 10 = -3 dBm
+ * 11 = -4 dBm
+ * 12 = -6 dBm
+ * 13 = -8 dBm
+ * 14 = -12 dBm
+ * 15 = -17 dBm
+ *
+ * AT86RF212B
+ * See datasheet for TX power settings
+ *
+ * \return 0, Supported Value
+ * \return -1, Not Supported Value
+ */
+static int8_t rf_tx_power_set(uint8_t power);
+static rf_trx_part_e rf_radio_type_read(void);
+static void rf_ack_wait_timer_start(uint16_t slots);
+static void rf_ack_wait_timer_stop(void);
+static void rf_handle_cca_ed_done(void);
+static void rf_handle_tx_end(void);
+static void rf_handle_rx_end(void);
+static void rf_on(void);
+static void rf_receive(void);
+static void rf_poll_trx_state_change(rf_trx_states_t trx_state);
+static void rf_init(void);
+static int8_t rf_device_register(const uint8_t *mac_addr);
+static void rf_device_unregister(void);
+static void rf_enable_static_frame_buffer_protection(void);
+static void rf_disable_static_frame_buffer_protection(void);
+static int8_t rf_start_cca(uint8_t *data_ptr, uint16_t data_length, uint8_t tx_handle, data_protocol_e data_protocol );
+static void rf_cca_abort(void);
+static void rf_calibration_cb(void);
+static void rf_init_phy_mode(void);
+static void rf_ack_wait_timer_interrupt(void);
+static void rf_calibration_timer_interrupt(void);
+static void rf_calibration_timer_start(uint32_t slots);
+static void rf_cca_timer_interrupt(void);
+static void rf_cca_timer_start(uint32_t slots);
+static uint8_t rf_scale_lqi(int8_t rssi);
+
+static int8_t rf_interface_state_control(phy_interface_state_e new_state, uint8_t rf_channel);
+static int8_t rf_extension(phy_extension_type_e extension_type,uint8_t *data_ptr);
+static int8_t rf_address_write(phy_address_type_e address_type,uint8_t *address_ptr);
+
+static void rf_if_cca_timer_start(uint32_t slots);
+static void rf_if_enable_promiscuous_mode(void);
+static void rf_if_lock(void);
+static void rf_if_unlock(void);
+static uint8_t rf_if_read_rnd(void);
+static void rf_if_calibration_timer_start(uint32_t slots);
+static void rf_if_interrupt_handler(void);
+static void rf_if_ack_wait_timer_start(uint16_t slots);
+static void rf_if_ack_wait_timer_stop(void);
+static void rf_if_ack_pending_ctrl(uint8_t state);
+static void rf_if_calibration(void);
+static uint8_t rf_if_read_register(uint8_t addr);
+static void rf_if_set_bit(uint8_t addr, uint8_t bit, uint8_t bit_mask);
+static void rf_if_clear_bit(uint8_t addr, uint8_t bit);
+static void rf_if_write_register(uint8_t addr, uint8_t data);
+static void rf_if_reset_radio(void);
+static void rf_if_enable_ant_div(void);
+static void rf_if_disable_ant_div(void);
+static void rf_if_enable_slptr(void);
+static void rf_if_disable_slptr(void);
+static void rf_if_write_antenna_diversity_settings(void);
+static void rf_if_write_set_tx_power_register(uint8_t value);
+static void rf_if_write_rf_settings(void);
+static uint8_t rf_if_check_cca(void);
+static uint8_t rf_if_read_trx_state(void);
+static uint16_t rf_if_read_packet(uint8_t data[RF_MTU], uint8_t *lqi_out, uint8_t *ed_out, bool *crc_good);
+static void rf_if_write_short_addr_registers(uint8_t *short_address);
+static uint8_t rf_if_last_acked_pending(void);
+static void rf_if_write_pan_id_registers(uint8_t *pan_id);
+static void rf_if_write_ieee_addr_registers(uint8_t *address);
+static void rf_if_write_frame_buffer(const uint8_t *ptr, uint8_t length);
+static void rf_if_change_trx_state(rf_trx_states_t trx_state);
+static void rf_if_enable_tx_end_interrupt(void);
+static void rf_if_enable_rx_end_interrupt(void);
+static void rf_if_enable_cca_ed_done_interrupt(void);
+static void rf_if_start_cca_process(void);
+static int8_t rf_if_scale_rssi(uint8_t ed_level);
+static void rf_if_set_channel_register(uint8_t channel);
+static void rf_if_enable_promiscuous_mode(void);
+static void rf_if_disable_promiscuous_mode(void);
+static uint8_t rf_if_read_part_num(void);
+static void rf_if_enable_irq(void);
+static void rf_if_disable_irq(void);
+
+#ifdef MBED_CONF_RTOS_PRESENT
+#include "mbed.h"
+#include "rtos.h"
+
+static void rf_if_irq_task_process_irq();
+
+#define SIG_RADIO 1
+#define SIG_TIMER_ACK 2
+#define SIG_TIMER_CAL 4
+#define SIG_TIMER_CCA 8
+
+#define SIG_TIMERS (SIG_TIMER_ACK|SIG_TIMER_CAL|SIG_TIMER_CCA)
+#define SIG_ALL (SIG_RADIO|SIG_TIMERS)
+#endif
+
+// HW pins to RF chip
+#define SPI_SPEED 7500000
+
+class UnlockedSPI : public SPI {
+public:
+ UnlockedSPI(PinName mosi, PinName miso, PinName sclk) :
+ SPI(mosi, miso, sclk) { }
+ virtual void lock() { }
+ virtual void unlock() { }
+};
+
+class RFBits {
+public:
+ RFBits(PinName spi_mosi, PinName spi_miso,
+ PinName spi_sclk, PinName spi_cs,
+ PinName spi_rst, PinName spi_slp, PinName spi_irq);
+ UnlockedSPI spi;
+ DigitalOut CS;
+ DigitalOut RST;
+ DigitalOut SLP_TR;
+ InterruptIn IRQ;
+ Timeout ack_timer;
+ Timeout cal_timer;
+ Timeout cca_timer;
+#ifdef MBED_CONF_RTOS_PRESENT
+ Thread irq_thread;
+ Mutex mutex;
+ void rf_if_irq_task();
+#endif
+};
+
+RFBits::RFBits(PinName spi_mosi, PinName spi_miso,
+ PinName spi_sclk, PinName spi_cs,
+ PinName spi_rst, PinName spi_slp, PinName spi_irq)
+ : spi(spi_mosi, spi_miso, spi_sclk),
+ CS(spi_cs),
+ RST(spi_rst),
+ SLP_TR(spi_slp),
+ IRQ(spi_irq)
+#ifdef MBED_CONF_RTOS_PRESENT
+,irq_thread(osPriorityRealtime, 1024)
+#endif
+{
+#ifdef MBED_CONF_RTOS_PRESENT
+ irq_thread.start(mbed::callback(this, &RFBits::rf_if_irq_task));
+#endif
+}
+
+static RFBits *rf;
+static uint8_t rf_part_num = 0;
+/*TODO: RSSI Base value setting*/
+static int8_t rf_rssi_base_val = -91;
+
+static uint8_t rf_if_spi_exchange(uint8_t out);
+
+static void rf_if_lock(void)
+{
+ platform_enter_critical();
+}
+
+static void rf_if_unlock(void)
+{
+ platform_exit_critical();
+}
+
+#ifdef MBED_CONF_RTOS_PRESENT
+static void rf_if_cca_timer_signal(void)
+{
+ rf->irq_thread.signal_set(SIG_TIMER_CCA);
+}
+
+static void rf_if_cal_timer_signal(void)
+{
+ rf->irq_thread.signal_set(SIG_TIMER_CAL);
+}
+
+static void rf_if_ack_timer_signal(void)
+{
+ rf->irq_thread.signal_set(SIG_TIMER_ACK);
+}
+#endif
+
+
+/* Delay functions for RF Chip SPI access */
+#ifdef __CC_ARM
+__asm static void delay_loop(uint32_t count)
+{
+1
+ SUBS a1, a1, #1
+ BCS %BT1
+ BX lr
+}
+#elif defined (__ICCARM__)
+static void delay_loop(uint32_t count)
+{
+ __asm volatile(
+ "loop: \n"
+ " SUBS %0, %0, #1 \n"
+ " BCS.n loop\n"
+ : "+r" (count)
+ :
+ : "cc"
+ );
+}
+#else // GCC
+static void delay_loop(uint32_t count)
+{
+ __asm__ volatile (
+ "%=:\n\t"
+#if defined(__thumb__) && !defined(__thumb2__)
+ "SUB %0, #1\n\t"
+#else
+ "SUBS %0, %0, #1\n\t"
+#endif
+ "BCS %=b\n\t"
+ : "+l" (count)
+ :
+ : "cc"
+ );
+}
+#endif
+
+static void delay_ns(uint32_t ns)
+{
+ uint32_t cycles_per_us = SystemCoreClock / 1000000;
+ // Cortex-M0 takes 4 cycles per loop (SUB=1, BCS=3)
+ // Cortex-M3 and M4 takes 3 cycles per loop (SUB=1, BCS=2)
+ // Cortex-M7 - who knows?
+ // Cortex M3-M7 have "CYCCNT" - would be better than a software loop, but M0 doesn't
+ // Assume 3 cycles per loop for now - will be 33% slow on M0. No biggie,
+ // as original version of code was 300% slow on M4.
+ // [Note that this very calculation, plus call overhead, will take multiple
+ // cycles. Could well be 100ns on its own... So round down here, startup is
+ // worth at least one loop iteration.]
+ uint32_t count = (cycles_per_us * ns) / 3000;
+
+ delay_loop(count);
+}
+
+// t1 = 180ns, SEL falling edge to MISO active [SPI setup assumed slow enough to not need manual delay]
+#define CS_SELECT() {rf->CS = 0; /* delay_ns(180); */}
+ // t9 = 250ns, last clock to SEL rising edge, t8 = 250ns, SPI idle time between consecutive access
+#define CS_RELEASE() {delay_ns(250); rf->CS = 1; delay_ns(250);}
+
+/*
+ * \brief Function sets the TX power variable.
+ *
+ * \param power TX power setting
+ *
+ * \return 0 Success
+ * \return -1 Fail
+ */
+MBED_UNUSED static int8_t rf_tx_power_set(uint8_t power)
+{
+ int8_t ret_val = -1;
+
+ radio_tx_power = power;
+ rf_if_lock();
+ rf_if_write_set_tx_power_register(radio_tx_power);
+ rf_if_unlock();
+ ret_val = 0;
+
+ return ret_val;
+}
+
+/*
+ * \brief Read connected radio part.
+ *
+ * This function only return valid information when rf_init() is called
+ *
+ * \return
+ */
+static rf_trx_part_e rf_radio_type_read(void)
+{
+ rf_trx_part_e ret_val = ATMEL_UNKNOW_DEV;
+
+ switch (rf_part_num)
+ {
+ case PART_AT86RF212:
+ ret_val = ATMEL_AT86RF212;
+ break;
+ case PART_AT86RF233:
+ ret_val = ATMEL_AT86RF233;
+ break;
+ default:
+ break;
+ }
+
+ return ret_val;
+}
+
+
+/*
+ * \brief Function starts the ACK wait timeout.
+ *
+ * \param slots Given slots, resolution 50us
+ *
+ * \return none
+ */
+static void rf_if_ack_wait_timer_start(uint16_t slots)
+{
+#ifdef MBED_CONF_RTOS_PRESENT
+ rf->ack_timer.attach_us(rf_if_ack_timer_signal, slots*50);
+#else
+ rf->ack_timer.attach_us(rf_ack_wait_timer_interrupt, slots*50);
+#endif
+}
+
+/*
+ * \brief Function starts the calibration interval.
+ *
+ * \param slots Given slots, resolution 50us
+ *
+ * \return none
+ */
+static void rf_if_calibration_timer_start(uint32_t slots)
+{
+#ifdef MBED_CONF_RTOS_PRESENT
+ rf->cal_timer.attach_us(rf_if_cal_timer_signal, slots*50);
+#else
+ rf->cal_timer.attach_us(rf_calibration_timer_interrupt, slots*50);
+#endif
+}
+
+/*
+ * \brief Function starts the CCA interval.
+ *
+ * \param slots Given slots, resolution 50us
+ *
+ * \return none
+ */
+static void rf_if_cca_timer_start(uint32_t slots)
+{
+#ifdef MBED_CONF_RTOS_PRESENT
+ rf->cca_timer.attach_us(rf_if_cca_timer_signal, slots*50);
+#else
+ rf->cca_timer.attach_us(rf_cca_timer_interrupt, slots*50);
+#endif
+}
+
+/*
+ * \brief Function stops the CCA interval.
+ *
+ * \return none
+ */
+static void rf_if_cca_timer_stop(void)
+{
+ rf->cca_timer.detach();
+}
+
+/*
+ * \brief Function stops the ACK wait timeout.
+ *
+ * \param none
+ *
+ * \return none
+ */
+static void rf_if_ack_wait_timer_stop(void)
+{
+ rf->ack_timer.detach();
+}
+
+/*
+ * \brief Function sets bit(s) in given RF register.
+ *
+ * \param addr Address of the register to set
+ * \param bit Bit(s) to set
+ * \param bit_mask Masks the field inside the register
+ *
+ * \return none
+ */
+static void rf_if_set_bit(uint8_t addr, uint8_t bit, uint8_t bit_mask)
+{
+ uint8_t reg = rf_if_read_register(addr);
+ reg &= ~bit_mask;
+ reg |= bit;
+ rf_if_write_register(addr, reg);
+}
+
+/*
+ * \brief Function clears bit(s) in given RF register.
+ *
+ * \param addr Address of the register to clear
+ * \param bit Bit(s) to clear
+ *
+ * \return none
+ */
+static void rf_if_clear_bit(uint8_t addr, uint8_t bit)
+{
+ rf_if_set_bit(addr, 0, bit);
+}
+
+/*
+ * \brief Function writes register in RF.
+ *
+ * \param addr Address on the RF
+ * \param data Written data
+ *
+ * \return none
+ */
+static void rf_if_write_register(uint8_t addr, uint8_t data)
+{
+ uint8_t cmd = 0xC0;
+ CS_SELECT();
+ rf_if_spi_exchange(cmd | addr);
+ rf_if_spi_exchange(data);
+ CS_RELEASE();
+}
+
+/*
+ * \brief Function reads RF register.
+ *
+ * \param addr Address on the RF
+ *
+ * \return Read data
+ */
+static uint8_t rf_if_read_register(uint8_t addr)
+{
+ uint8_t cmd = 0x80;
+ uint8_t data;
+ CS_SELECT();
+ rf_if_spi_exchange(cmd | addr);
+ data = rf_if_spi_exchange(0);
+ CS_RELEASE();
+ return data;
+}
+
+/*
+ * \brief Function resets the RF.
+ *
+ * \param none
+ *
+ * \return none
+ */
+static void rf_if_reset_radio(void)
+{
+ rf->spi.frequency(SPI_SPEED);
+ rf->IRQ.rise(0);
+ rf->RST = 1;
+ wait_ms(1);
+ rf->RST = 0;
+ wait_ms(10);
+ CS_RELEASE();
+ rf->SLP_TR = 0;
+ wait_ms(10);
+ rf->RST = 1;
+ wait_ms(10);
+
+ rf->IRQ.rise(&rf_if_interrupt_handler);
+}
+
+/*
+ * \brief Function enables the promiscuous mode.
+ *
+ * \param none
+ *
+ * \return none
+ */
+static void rf_if_enable_promiscuous_mode(void)
+{
+ /*Set AACK_PROM_MODE to enable the promiscuous mode*/
+ rf_if_set_bit(XAH_CTRL_1, AACK_PROM_MODE, AACK_PROM_MODE);
+}
+
+/*
+ * \brief Function enables the promiscuous mode.
+ *
+ * \param none
+ *
+ * \return none
+ */
+static void rf_if_disable_promiscuous_mode(void)
+{
+ /*Set AACK_PROM_MODE to enable the promiscuous mode*/
+ rf_if_clear_bit(XAH_CTRL_1, AACK_PROM_MODE);
+}
+
+/*
+ * \brief Function enables the Antenna diversity usage.
+ *
+ * \param none
+ *
+ * \return none
+ */
+static void rf_if_enable_ant_div(void)
+{
+ /*Set ANT_EXT_SW_EN to enable controlling of antenna diversity*/
+ rf_if_set_bit(ANT_DIV, ANT_EXT_SW_EN, ANT_EXT_SW_EN);
+}
+
+/*
+ * \brief Function disables the Antenna diversity usage.
+ *
+ * \param none
+ *
+ * \return none
+ */
+static void rf_if_disable_ant_div(void)
+{
+ rf_if_clear_bit(ANT_DIV, ANT_EXT_SW_EN);
+}
+
+/*
+ * \brief Function sets the SLP TR pin.
+ *
+ * \param none
+ *
+ * \return none
+ */
+static void rf_if_enable_slptr(void)
+{
+ rf->SLP_TR = 1;
+}
+
+/*
+ * \brief Function clears the SLP TR pin.
+ *
+ * \param none
+ *
+ * \return none
+ */
+static void rf_if_disable_slptr(void)
+{
+ rf->SLP_TR = 0;
+}
+
+/*
+ * \brief Function writes the antenna diversity settings.
+ *
+ * \param none
+ *
+ * \return none
+ */
+static void rf_if_write_antenna_diversity_settings(void)
+{
+ /*Recommended setting of PDT_THRES is 3 when antenna diversity is used*/
+ rf_if_set_bit(RX_CTRL, 0x03, 0x0f);
+ rf_if_write_register(ANT_DIV, ANT_DIV_EN | ANT_EXT_SW_EN | ANT_CTRL_DEFAULT);
+}
+
+/*
+ * \brief Function writes the TX output power register.
+ *
+ * \param value Given register value
+ *
+ * \return none
+ */
+static void rf_if_write_set_tx_power_register(uint8_t value)
+{
+ rf_if_write_register(PHY_TX_PWR, value);
+}
+
+/*
+ * \brief Function returns the RF part number.
+ *
+ * \param none
+ *
+ * \return part number
+ */
+static uint8_t rf_if_read_part_num(void)
+{
+ return rf_if_read_register(PART_NUM);
+}
+
+/*
+ * \brief Function writes the RF settings and initialises SPI interface.
+ *
+ * \param none
+ *
+ * \return none
+ */
+static void rf_if_write_rf_settings(void)
+{
+ /*Reset RF module*/
+ rf_if_reset_radio();
+
+ rf_part_num = rf_if_read_part_num();
+
+ rf_if_write_register(XAH_CTRL_0,0);
+ rf_if_write_register(TRX_CTRL_1, 0x20);
+
+ /*CCA Mode - Carrier sense OR energy above threshold. Channel list is set separately*/
+ rf_if_write_register(PHY_CC_CCA, 0x05);
+
+ /*Read transceiver PART_NUM*/
+ rf_part_num = rf_if_read_register(PART_NUM);
+
+ /*Sub-GHz RF settings*/
+ if(rf_part_num == PART_AT86RF212)
+ {
+ /*GC_TX_OFFS mode-dependent setting - OQPSK*/
+ rf_if_write_register(RF_CTRL_0, 0x32);
+
+ if(rf_if_read_register(VERSION_NUM) == VERSION_AT86RF212B)
+ {
+ /*TX Output Power setting - 0 dBm North American Band*/
+ rf_if_write_register(PHY_TX_PWR, 0x03);
+ }
+ else
+ {
+ /*TX Output Power setting - 0 dBm North American Band*/
+ rf_if_write_register(PHY_TX_PWR, 0x24);
+ }
+
+ /*PHY Mode: IEEE 802.15.4-2006/2011 - OQPSK-SIN-250*/
+ rf_if_write_register(TRX_CTRL_2, RF_PHY_MODE);
+ /*Based on receiver Characteristics. See AT86RF212B Datasheet where RSSI BASE VALUE in range -97 - -100 dBm*/
+ rf_rssi_base_val = -98;
+ }
+ /*2.4GHz RF settings*/
+ else
+ {
+#if 0
+ /* Disable power saving functions for now - can only impact reliability,
+ * and don't have any users demanding it. */
+ /*Set RPC register*/
+ rf_if_write_register(TRX_RPC, RX_RPC_CTRL|RX_RPC_EN|PLL_RPC_EN|XAH_TX_RPC_EN|IPAN_RPC_EN|TRX_RPC_RSVD_1);
+#endif
+ /*PHY Mode: IEEE 802.15.4 - Data Rate 250 kb/s*/
+ rf_if_write_register(TRX_CTRL_2, 0);
+ rf_rssi_base_val = -91;
+ }
+}
+
+/*
+ * \brief Function checks the channel availability
+ *
+ * \param none
+ *
+ * \return 1 Channel clear
+ * \return 0 Channel not clear
+ */
+static uint8_t rf_if_check_cca(void)
+{
+ uint8_t retval = 0;
+ if(rf_if_read_register(TRX_STATUS) & CCA_STATUS)
+ {
+ retval = 1;
+ }
+ return retval;
+}
+
+/*
+ * \brief Function returns the RF state
+ *
+ * \param none
+ *
+ * \return RF state
+ */
+static uint8_t rf_if_read_trx_state(void)
+{
+ return rf_if_read_register(TRX_STATUS) & 0x1F;
+}
+
+/*
+ * \brief Function reads packet buffer.
+ *
+ * \param data_out Output buffer
+ * \param lqi_out LQI output
+ * \param ed_out ED output
+ * \param crc_good CRC good indication
+ *
+ * \return PSDU length [0..RF_MTU]
+ */
+static uint16_t rf_if_read_packet(uint8_t data_out[RF_MTU], uint8_t *lqi_out, uint8_t *ed_out, bool *crc_good)
+{
+ CS_SELECT();
+ rf_if_spi_exchange(0x20);
+ uint8_t len = rf_if_spi_exchange(0) & 0x7F;
+ uint8_t *ptr = data_out;
+ for (uint_fast8_t i = 0; i < len; i++) {
+ *ptr++ = rf_if_spi_exchange(0);
+ }
+
+ *lqi_out = rf_if_spi_exchange(0);
+ *ed_out = rf_if_spi_exchange(0);
+ *crc_good = rf_if_spi_exchange(0) & 0x80;
+ CS_RELEASE();
+
+ return len;
+}
+
+/*
+ * \brief Function writes RF short address registers
+ *
+ * \param short_address Given short address
+ *
+ * \return none
+ */
+static void rf_if_write_short_addr_registers(uint8_t *short_address)
+{
+ rf_if_write_register(SHORT_ADDR_1, *short_address++);
+ rf_if_write_register(SHORT_ADDR_0, *short_address);
+}
+
+/*
+ * \brief Function sets the frame pending in ACK message
+ *
+ * \param state Given frame pending state
+ *
+ * \return none
+ */
+static void rf_if_ack_pending_ctrl(uint8_t state)
+{
+ rf_if_lock();
+ if(state)
+ {
+ rf_if_set_bit(CSMA_SEED_1, (1 << AACK_SET_PD), (1 << AACK_SET_PD));
+ }
+ else
+ {
+ rf_if_clear_bit(CSMA_SEED_1, (1 << AACK_SET_PD));
+ }
+ rf_if_unlock();
+}
+
+/*
+ * \brief Function returns the state of frame pending control
+ *
+ * \param none
+ *
+ * \return Frame pending state
+ */
+static uint8_t rf_if_last_acked_pending(void)
+{
+ uint8_t last_acked_data_pending;
+
+ rf_if_lock();
+ if(rf_if_read_register(CSMA_SEED_1) & 0x20)
+ last_acked_data_pending = 1;
+ else
+ last_acked_data_pending = 0;
+ rf_if_unlock();
+
+ return last_acked_data_pending;
+}
+
+/*
+ * \brief Function calibrates the RF part.
+ *
+ * \param none
+ *
+ * \return none
+ */
+static void rf_if_calibration(void)
+{
+ rf_if_set_bit(FTN_CTRL, FTN_START, FTN_START);
+ /*Wait while calibration is running*/
+ while(rf_if_read_register(FTN_CTRL) & FTN_START);
+}
+
+/*
+ * \brief Function writes RF PAN Id registers
+ *
+ * \param pan_id Given PAN Id
+ *
+ * \return none
+ */
+static void rf_if_write_pan_id_registers(uint8_t *pan_id)
+{
+ rf_if_write_register(PAN_ID_1, *pan_id++);
+ rf_if_write_register(PAN_ID_0, *pan_id);
+}
+
+/*
+ * \brief Function writes RF IEEE Address registers
+ *
+ * \param address Given IEEE Address
+ *
+ * \return none
+ */
+static void rf_if_write_ieee_addr_registers(uint8_t *address)
+{
+ uint8_t i;
+ uint8_t temp = IEEE_ADDR_0;
+
+ for(i=0; i<8; i++)
+ rf_if_write_register(temp++, address[7-i]);
+}
+
+/*
+ * \brief Function writes data in RF frame buffer.
+ *
+ * \param ptr Pointer to data (PSDU, except FCS)
+ * \param length Pointer to length (PSDU length, minus 2 for FCS)
+ *
+ * \return none
+ */
+static void rf_if_write_frame_buffer(const uint8_t *ptr, uint8_t length)
+{
+ uint8_t i;
+ uint8_t cmd = 0x60;
+
+ CS_SELECT();
+ rf_if_spi_exchange(cmd);
+ rf_if_spi_exchange(length + 2);
+ for(i=0; i<length; i++)
+ rf_if_spi_exchange(*ptr++);
+
+ CS_RELEASE();
+}
+
+/*
+ * \brief Function returns 8-bit random value.
+ *
+ * \param none
+ *
+ * \return random value
+ */
+static uint8_t rf_if_read_rnd(void)
+{
+ uint8_t temp;
+ uint8_t tmp_rpc_val = 0;
+ /*RPC must be disabled while reading the random number*/
+ if(rf_part_num == PART_AT86RF233)
+ {
+ tmp_rpc_val = rf_if_read_register(TRX_RPC);
+ rf_if_write_register(TRX_RPC, RX_RPC_CTRL|TRX_RPC_RSVD_1);
+ }
+
+ wait_ms(1);
+ temp = ((rf_if_read_register(PHY_RSSI)>>5) << 6);
+ wait_ms(1);
+ temp |= ((rf_if_read_register(PHY_RSSI)>>5) << 4);
+ wait_ms(1);
+ temp |= ((rf_if_read_register(PHY_RSSI)>>5) << 2);
+ wait_ms(1);
+ temp |= ((rf_if_read_register(PHY_RSSI)>>5));
+ wait_ms(1);
+ if(rf_part_num == PART_AT86RF233)
+ rf_if_write_register(TRX_RPC, tmp_rpc_val);
+ return temp;
+}
+
+/*
+ * \brief Function changes the state of the RF.
+ *
+ * \param trx_state Given RF state
+ *
+ * \return none
+ */
+static void rf_if_change_trx_state(rf_trx_states_t trx_state)
+{
+ // XXX Lock claim apparently not required
+ rf_if_lock();
+ rf_if_write_register(TRX_STATE, trx_state);
+ /*Wait while not in desired state*/
+ rf_poll_trx_state_change(trx_state);
+ rf_if_unlock();
+}
+
+/*
+ * \brief Function enables the TX END interrupt
+ *
+ * \param none
+ *
+ * \return none
+ */
+static void rf_if_enable_tx_end_interrupt(void)
+{
+ rf_if_set_bit(IRQ_MASK, TRX_END, TRX_END);
+}
+
+/*
+ * \brief Function enables the RX END interrupt
+ *
+ * \param none
+ *
+ * \return none
+ */
+static void rf_if_enable_rx_end_interrupt(void)
+{
+ rf_if_set_bit(IRQ_MASK, TRX_END, TRX_END);
+}
+
+/*
+ * \brief Function enables the CCA ED interrupt
+ *
+ * \param none
+ *
+ * \return none
+ */
+static void rf_if_enable_cca_ed_done_interrupt(void)
+{
+ rf_if_set_bit(IRQ_MASK, CCA_ED_DONE, CCA_ED_DONE);
+}
+
+/*
+ * \brief Function starts the CCA process
+ *
+ * \param none
+ *
+ * \return none
+ */
+static void rf_if_start_cca_process(void)
+{
+ rf_if_set_bit(PHY_CC_CCA, CCA_REQUEST, CCA_REQUEST);
+}
+
+/*
+ * \brief Function scales RSSI
+ *
+ * \param ed_level ED level read from chip
+ *
+ * \return appropriately scaled RSSI dBm
+ */
+static int8_t rf_if_scale_rssi(uint8_t ed_level)
+{
+ if (rf_part_num == PART_AT86RF212) {
+ /* Data sheet says to multiply by 1.03 - this is 1.03125, rounding down */
+ ed_level += ed_level >> 5;
+ }
+ return rf_rssi_base_val + ed_level;
+}
+
+/*
+ * \brief Function sets the RF channel field
+ *
+ * \param Given channel
+ *
+ * \return none
+ */
+static void rf_if_set_channel_register(uint8_t channel)
+{
+ rf_if_set_bit(PHY_CC_CCA, channel, 0x1f);
+}
+
+/*
+ * \brief Function enables RF irq pin interrupts in RF interface.
+ *
+ * \param none
+ *
+ * \return none
+ */
+static void rf_if_enable_irq(void)
+{
+ rf->IRQ.enable_irq();
+}
+
+/*
+ * \brief Function disables RF irq pin interrupts in RF interface.
+ *
+ * \param none
+ *
+ * \return none
+ */
+static void rf_if_disable_irq(void)
+{
+ rf->IRQ.disable_irq();
+}
+
+#ifdef MBED_CONF_RTOS_PRESENT
+static void rf_if_interrupt_handler(void)
+{
+ rf->irq_thread.signal_set(SIG_RADIO);
+}
+
+// Started during construction of rf, so variable
+// rf isn't set at the start. Uses 'this' instead.
+void RFBits::rf_if_irq_task(void)
+{
+ for (;;) {
+ osEvent event = irq_thread.signal_wait(0);
+ if (event.status != osEventSignal) {
+ continue;
+ }
+ rf_if_lock();
+ if (event.value.signals & SIG_RADIO) {
+ rf_if_irq_task_process_irq();
+ }
+ if (event.value.signals & SIG_TIMER_ACK) {
+ rf_ack_wait_timer_interrupt();
+ }
+ if (event.value.signals & SIG_TIMER_CCA) {
+ rf_cca_timer_interrupt();
+ }
+ if (event.value.signals & SIG_TIMER_CAL) {
+ rf_calibration_timer_interrupt();
+ }
+ rf_if_unlock();
+ }
+}
+
+static void rf_if_irq_task_process_irq(void)
+#else
+/*
+ * \brief Function is a RF interrupt vector. End of frame in RX and TX are handled here as well as CCA process interrupt.
+ *
+ * \param none
+ *
+ * \return none
+ */
+static void rf_if_interrupt_handler(void)
+#endif
+{
+ uint8_t irq_status;
+
+ /*Read interrupt flag*/
+ irq_status = rf_if_read_register(IRQ_STATUS);
+
+ /*Disable interrupt on RF*/
+ rf_if_clear_bit(IRQ_MASK, irq_status);
+ /*RX start interrupt*/
+ if(irq_status & RX_START)
+ {
+ }
+ /*Address matching interrupt*/
+ if(irq_status & AMI)
+ {
+ }
+ if(irq_status & TRX_UR)
+ {
+ }
+ /*Frame end interrupt (RX and TX)*/
+ if(irq_status & TRX_END)
+ {
+ /*TX done interrupt*/
+ if(rf_if_read_trx_state() == PLL_ON || rf_if_read_trx_state() == TX_ARET_ON)
+ {
+ rf_handle_tx_end();
+ }
+ /*Frame received interrupt*/
+ else
+ {
+ rf_handle_rx_end();
+ }
+ }
+ if(irq_status & CCA_ED_DONE)
+ {
+ rf_handle_cca_ed_done();
+ }
+}
+
+/*
+ * \brief Function writes/read data in SPI interface
+ *
+ * \param out Output data
+ *
+ * \return Input data
+ */
+static uint8_t rf_if_spi_exchange(uint8_t out)
+{
+ uint8_t v;
+ v = rf->spi.write(out);
+ // t9 = t5 = 250ns, delay between LSB of last byte to next MSB or delay between LSB & SEL rising
+ // [SPI setup assumed slow enough to not need manual delay]
+ // delay_ns(250);
+ return v;
+}
+
+/*
+ * \brief Function sets given RF flag on.
+ *
+ * \param x Given RF flag
+ *
+ * \return none
+ */
+static void rf_flags_set(uint8_t x)
+{
+ rf_flags |= x;
+}
+
+/*
+ * \brief Function clears given RF flag on.
+ *
+ * \param x Given RF flag
+ *
+ * \return none
+ */
+static void rf_flags_clear(uint8_t x)
+{
+ rf_flags &= ~x;
+}
+
+/*
+ * \brief Function checks if given RF flag is on.
+ *
+ * \param x Given RF flag
+ *
+ * \return states of the given flags
+ */
+static uint8_t rf_flags_check(uint8_t x)
+{
+ return (rf_flags & x);
+}
+
+/*
+ * \brief Function clears all RF flags.
+ *
+ * \param none
+ *
+ * \return none
+ */
+static void rf_flags_reset(void)
+{
+ rf_flags = 0;
+}
+
+/*
+ * \brief Function initialises and registers the RF driver.
+ *
+ * \param none
+ *
+ * \return rf_radio_driver_id Driver ID given by NET library
+ */
+static int8_t rf_device_register(const uint8_t *mac_addr)
+{
+ rf_trx_part_e radio_type;
+
+ rf_init();
+
+ radio_type = rf_radio_type_read();
+ if(radio_type != ATMEL_UNKNOW_DEV)
+ {
+ /*Set pointer to MAC address*/
+ device_driver.PHY_MAC = (uint8_t *)mac_addr;
+ device_driver.driver_description = (char*)"ATMEL_MAC";
+ //Create setup Used Radio chips
+ if(radio_type == ATMEL_AT86RF212)
+ {
+ device_driver.link_type = PHY_LINK_15_4_SUBGHZ_TYPE;
+ }
+ else
+ {
+ device_driver.link_type = PHY_LINK_15_4_2_4GHZ_TYPE;
+ }
+ device_driver.phy_channel_pages = phy_channel_pages;
+ /*Maximum size of payload is 127*/
+ device_driver.phy_MTU = 127;
+ /*No header in PHY*/
+ device_driver.phy_header_length = 0;
+ /*No tail in PHY*/
+ device_driver.phy_tail_length = 0;
+ /*Set address write function*/
+ device_driver.address_write = &rf_address_write;
+ /*Set RF extension function*/
+ device_driver.extension = &rf_extension;
+ /*Set RF state control function*/
+ device_driver.state_control = &rf_interface_state_control;
+ /*Set transmit function*/
+ device_driver.tx = &rf_start_cca;
+ /*NULLIFY rx and tx_done callbacks*/
+ device_driver.phy_rx_cb = NULL;
+ device_driver.phy_tx_done_cb = NULL;
+ /*Register device driver*/
+ rf_radio_driver_id = arm_net_phy_register(&device_driver);
+ }
+ return rf_radio_driver_id;
+}
+
+/*
+ * \brief Function unregisters the RF driver.
+ *
+ * \param none
+ *
+ * \return none
+ */
+static void rf_device_unregister()
+{
+ if (rf_radio_driver_id >= 0) {
+ arm_net_phy_unregister(rf_radio_driver_id);
+ rf_radio_driver_id = -1;
+ }
+}
+
+/*
+ * \brief Enable frame buffer protection
+ *
+ * If protection is enabled, reception cannot start - the radio will
+ * not go into RX_BUSY or write into the frame buffer if in receive mode.
+ * Setting this won't abort an already-started reception.
+ * We can still write the frame buffer ourselves.
+ */
+static void rf_enable_static_frame_buffer_protection(void)
+{
+ if (!rf_flags_check(RFF_PROT)) {
+ /* This also writes RX_PDT_LEVEL to 0 - maximum RX sensitivity */
+ /* Would need to modify this function if messing with that */
+ rf_if_write_register(RX_SYN, RX_PDT_DIS);
+ rf_flags_set(RFF_PROT);
+ }
+}
+
+/*
+ * \brief Disable frame buffer protection
+ */
+static void rf_disable_static_frame_buffer_protection(void)
+{
+ if (rf_flags_check(RFF_PROT)) {
+ /* This also writes RX_PDT_LEVEL to 0 - maximum RX sensitivity */
+ /* Would need to modify this function if messing with that */
+ rf_if_write_register(RX_SYN, 0);
+ rf_flags_clear(RFF_PROT);
+ }
+}
+
+
+/*
+ * \brief Function is a call back for ACK wait timeout.
+ *
+ * \param none
+ *
+ * \return none
+ */
+static void rf_ack_wait_timer_interrupt(void)
+{
+ rf_if_lock();
+ expected_ack_sequence = -1;
+ /*Force PLL state*/
+ rf_if_change_trx_state(FORCE_PLL_ON);
+ rf_poll_trx_state_change(PLL_ON);
+ /*Start receiver in RX_AACK_ON state*/
+ rf_rx_mode = 0;
+ rf_flags_clear(RFF_RX);
+ rf_receive();
+ rf_if_unlock();
+}
+
+/*
+ * \brief Function is a call back for calibration interval timer.
+ *
+ * \param none
+ *
+ * \return none
+ */
+static void rf_calibration_timer_interrupt(void)
+{
+ /*Calibrate RF*/
+ rf_calibration_cb();
+ /*Start new calibration timeout*/
+ rf_calibration_timer_start(RF_CALIBRATION_INTERVAL);
+}
+
+/*
+ * \brief Function is a call back for cca interval timer.
+ *
+ * \param none
+ *
+ * \return none
+ */
+static void rf_cca_timer_interrupt(void)
+{
+ /*Disable reception - locks against entering BUSY_RX and overwriting frame buffer*/
+ rf_enable_static_frame_buffer_protection();
+
+ if(rf_if_read_trx_state() == BUSY_RX_AACK)
+ {
+ /*Reception already started - re-enable reception and say CCA fail*/
+ rf_disable_static_frame_buffer_protection();
+ if(device_driver.phy_tx_done_cb){
+ device_driver.phy_tx_done_cb(rf_radio_driver_id, mac_tx_handle, PHY_LINK_CCA_FAIL, 0, 0);
+ }
+ }
+ else
+ {
+ /*Load the frame buffer with frame to transmit */
+ rf_if_write_frame_buffer(rf_tx_data, rf_tx_length);
+ /*Make sure we're in RX state to read channel (any way we could not be?)*/
+ rf_receive();
+ rf_flags_set(RFF_CCA);
+ /*Start CCA process*/
+ rf_if_enable_cca_ed_done_interrupt();
+ rf_if_start_cca_process();
+ }
+}
+
+/*
+ * \brief Function starts the ACK wait timeout.
+ *
+ * \param slots Given slots, resolution 50us
+ *
+ * \return none
+ */
+static void rf_ack_wait_timer_start(uint16_t slots)
+{
+ rf_if_ack_wait_timer_start(slots);
+}
+
+/*
+ * \brief Function starts the calibration interval.
+ *
+ * \param slots Given slots, resolution 50us
+ *
+ * \return none
+ */
+static void rf_calibration_timer_start(uint32_t slots)
+{
+ rf_if_calibration_timer_start(slots);
+}
+
+/*
+ * \brief Function starts the CCA backoff.
+ *
+ * \param slots Given slots, resolution 50us
+ *
+ * \return none
+ */
+static void rf_cca_timer_start(uint32_t slots)
+{
+ rf_if_cca_timer_start(slots);
+}
+
+/*
+ * \brief Function stops the CCA backoff.
+ *
+ * \return none
+ */
+static void rf_cca_timer_stop(void)
+{
+ rf_if_cca_timer_stop();
+}
+
+/*
+ * \brief Function stops the ACK wait timeout.
+ *
+ * \param none
+ *
+ * \return none
+ */
+static void rf_ack_wait_timer_stop(void)
+{
+ rf_if_ack_wait_timer_stop();
+}
+
+/*
+ * \brief Function writes various RF settings in startup.
+ *
+ * \param none
+ *
+ * \return none
+ */
+static void rf_write_settings(void)
+{
+ rf_if_lock();
+ rf_if_write_rf_settings();
+ /*Set output power*/
+ rf_if_write_set_tx_power_register(radio_tx_power);
+ /*Initialise Antenna Diversity*/
+ if(rf_use_antenna_diversity)
+ rf_if_write_antenna_diversity_settings();
+ rf_if_unlock();
+}
+
+/*
+ * \brief Function writes 16-bit address in RF address filter.
+ *
+ * \param short_address Given short address
+ *
+ * \return none
+ */
+static void rf_set_short_adr(uint8_t * short_address)
+{
+ rf_if_lock();
+ /*Wake up RF if sleeping*/
+ if(rf_flags_check(RFF_ON) == 0)
+ {
+ rf_if_disable_slptr();
+ rf_poll_trx_state_change(TRX_OFF);
+ }
+ /*Write address filter registers*/
+ rf_if_write_short_addr_registers(short_address);
+ /*RF back to sleep*/
+ if(rf_flags_check(RFF_ON) == 0)
+ {
+ rf_if_enable_slptr();
+ }
+ rf_if_unlock();
+}
+
+/*
+ * \brief Function writes PAN Id in RF PAN Id filter.
+ *
+ * \param pan_id Given PAN Id
+ *
+ * \return none
+ */
+static void rf_set_pan_id(uint8_t *pan_id)
+{
+ rf_if_lock();
+ /*Wake up RF if sleeping*/
+ if(rf_flags_check(RFF_ON) == 0)
+ {
+ rf_if_disable_slptr();
+ rf_poll_trx_state_change(TRX_OFF);
+ }
+ /*Write address filter registers*/
+ rf_if_write_pan_id_registers(pan_id);
+ /*RF back to sleep*/
+ if(rf_flags_check(RFF_ON) == 0)
+ {
+ rf_if_enable_slptr();
+ }
+ rf_if_unlock();
+}
+
+/*
+ * \brief Function writes 64-bit address in RF address filter.
+ *
+ * \param address Given 64-bit address
+ *
+ * \return none
+ */
+static void rf_set_address(uint8_t *address)
+{
+ rf_if_lock();
+ /*Wake up RF if sleeping*/
+ if(rf_flags_check(RFF_ON) == 0)
+ {
+ rf_if_disable_slptr();
+ rf_poll_trx_state_change(TRX_OFF);
+ }
+ /*Write address filter registers*/
+ rf_if_write_ieee_addr_registers(address);
+ /*RF back to sleep*/
+ if(rf_flags_check(RFF_ON) == 0)
+ {
+ rf_if_enable_slptr();
+ }
+ rf_if_unlock();
+}
+
+/*
+ * \brief Function sets the RF channel.
+ *
+ * \param ch New channel
+ *
+ * \return none
+ */
+static void rf_channel_set(uint8_t ch)
+{
+ rf_if_lock();
+ rf_phy_channel = ch;
+ if(ch < 0x1f)
+ rf_if_set_channel_register(ch);
+ rf_if_unlock();
+}
+
+
+/*
+ * \brief Function initialises the radio driver and resets the radio.
+ *
+ * \param none
+ *
+ * \return none
+ */
+static void rf_init(void)
+{
+ /*Reset RF module*/
+ rf_if_reset_radio();
+
+ rf_if_lock();
+
+ /*Write RF settings*/
+ rf_write_settings();
+ /*Initialise PHY mode*/
+ rf_init_phy_mode();
+ /*Clear RF flags*/
+ rf_flags_reset();
+ /*Set RF in TRX OFF state*/
+ rf_if_change_trx_state(TRX_OFF);
+ /*Set RF in PLL_ON state*/
+ rf_if_change_trx_state(PLL_ON);
+ /*Start receiver*/
+ rf_receive();
+ /*Read randomness, and add to seed*/
+ randLIB_add_seed(rf_if_read_rnd());
+ /*Start RF calibration timer*/
+ rf_calibration_timer_start(RF_CALIBRATION_INTERVAL);
+
+ rf_if_unlock();
+}
+
+/**
+ * \brief Function gets called when MAC is setting radio off.
+ *
+ * \param none
+ *
+ * \return none
+ */
+static void rf_off(void)
+{
+ if(rf_flags_check(RFF_ON))
+ {
+ rf_if_lock();
+ rf_cca_abort();
+ uint16_t while_counter = 0;
+ /*Wait while receiving*/
+ while(rf_if_read_trx_state() == BUSY_RX_AACK)
+ {
+ while_counter++;
+ if(while_counter == 0xffff)
+ break;
+ }
+ /*RF state change: RX_AACK_ON->PLL_ON->TRX_OFF->SLEEP*/
+ if(rf_if_read_trx_state() == RX_AACK_ON)
+ {
+ rf_if_change_trx_state(PLL_ON);
+ }
+ rf_if_change_trx_state(TRX_OFF);
+ rf_if_enable_slptr();
+
+ /*Disable Antenna Diversity*/
+ if(rf_use_antenna_diversity)
+ rf_if_disable_ant_div();
+ rf_if_unlock();
+ }
+
+ /*Clears all flags*/
+ rf_flags_reset();
+}
+
+/*
+ * \brief Function polls the RF state until it has changed to desired state.
+ *
+ * \param trx_state RF state
+ *
+ * \return none
+ */
+static void rf_poll_trx_state_change(rf_trx_states_t trx_state)
+{
+ uint16_t while_counter = 0;
+ // XXX lock apparently not needed
+ rf_if_lock();
+
+ if(trx_state != RF_TX_START)
+ {
+ if(trx_state == FORCE_PLL_ON)
+ trx_state = PLL_ON;
+ else if(trx_state == FORCE_TRX_OFF)
+ trx_state = TRX_OFF;
+
+ while(rf_if_read_trx_state() != trx_state)
+ {
+ while_counter++;
+ if(while_counter == 0x1ff)
+ break;
+ }
+ }
+ rf_if_unlock();
+}
+
+/*
+ * \brief Function starts the CCA process before starting data transmission and copies the data to RF TX FIFO.
+ *
+ * \param data_ptr Pointer to TX data (excluding FCS)
+ * \param data_length Length of the TX data (excluding FCS)
+ * \param tx_handle Handle to transmission
+ * \return 0 Success
+ * \return -1 Busy
+ */
+static int8_t rf_start_cca(uint8_t *data_ptr, uint16_t data_length, uint8_t tx_handle, data_protocol_e data_protocol )
+{
+ (void)data_protocol;
+ rf_if_lock();
+ /*Check if transmitter is busy*/
+ if(rf_if_read_trx_state() == BUSY_RX_AACK || data_length > RF_MTU - 2)
+ {
+ rf_if_unlock();
+ /*Return busy*/
+ return -1;
+ }
+ else
+ {
+ expected_ack_sequence = -1;
+
+ /*Nanostack has a static TX buffer, which will remain valid until we*/
+ /*generate a callback, so we just note the pointer for reading later.*/
+ rf_tx_data = data_ptr;
+ rf_tx_length = data_length;
+ /*Start CCA timeout*/
+ rf_cca_timer_start(RF_CCA_BASE_BACKOFF + randLIB_get_random_in_range(0, RF_CCA_RANDOM_BACKOFF));
+ /*Store TX handle*/
+ mac_tx_handle = tx_handle;
+ rf_if_unlock();
+ }
+
+ /*Return success*/
+ return 0;
+}
+
+/*
+ * \brief Function aborts CCA process.
+ *
+ * \param none
+ *
+ * \return none
+ */
+static void rf_cca_abort(void)
+{
+ rf_cca_timer_stop();
+ rf_flags_clear(RFF_CCA);
+ rf_disable_static_frame_buffer_protection();
+}
+
+/*
+ * \brief Function starts the transmission of the frame.
+ *
+ * \param none
+ *
+ * \return none
+ */
+static void rf_start_tx(void)
+{
+ /*Only start transmitting from RX state*/
+ uint8_t trx_state = rf_if_read_trx_state();
+ if(trx_state != RX_AACK_ON)
+ {
+ rf_disable_static_frame_buffer_protection();
+ if(device_driver.phy_tx_done_cb){
+ device_driver.phy_tx_done_cb(rf_radio_driver_id, mac_tx_handle, PHY_LINK_CCA_FAIL, 0, 0);
+ }
+ }
+ else
+ {
+ /*RF state change: ->PLL_ON->RF_TX_START*/
+ rf_if_change_trx_state(FORCE_PLL_ON);
+ rf_flags_clear(RFF_RX);
+ /*Now we're out of receive mode, can release protection*/
+ rf_disable_static_frame_buffer_protection();
+ rf_if_enable_tx_end_interrupt();
+ rf_flags_set(RFF_TX);
+ rf_if_change_trx_state(RF_TX_START);
+ }
+}
+
+/*
+ * \brief Function sets the RF in RX state.
+ *
+ * \param none
+ *
+ * \return none
+ */
+static void rf_receive(void)
+{
+ uint16_t while_counter = 0;
+ if(rf_flags_check(RFF_ON) == 0)
+ {
+ rf_on();
+ }
+ /*If not yet in RX state set it*/
+ if(rf_flags_check(RFF_RX) == 0)
+ {
+ rf_if_lock();
+ /*Wait while receiving data*/
+ while(rf_if_read_trx_state() == BUSY_RX_AACK)
+ {
+ while_counter++;
+ if(while_counter == 0xffff)
+ {
+ break;
+ }
+ }
+
+ rf_if_change_trx_state(PLL_ON);
+
+ if((rf_mode == RF_MODE_SNIFFER) || (rf_mode == RF_MODE_ED))
+ {
+ rf_if_change_trx_state(RX_ON);
+ }
+ else
+ {
+ /*ACK is always received in promiscuous mode to bypass address filters*/
+ if(rf_rx_mode)
+ {
+ rf_rx_mode = 0;
+ rf_if_enable_promiscuous_mode();
+ }
+ else
+ {
+ rf_if_disable_promiscuous_mode();
+ }
+ rf_if_change_trx_state(RX_AACK_ON);
+ }
+ /*If calibration timer was unable to calibrate the RF, run calibration now*/
+ if(!rf_tuned)
+ {
+ /*Start calibration. This can be done in states TRX_OFF, PLL_ON or in any receive state*/
+ rf_if_calibration();
+ /*RF is tuned now*/
+ rf_tuned = 1;
+ }
+
+ rf_channel_set(rf_phy_channel);
+ rf_flags_set(RFF_RX);
+ // Don't receive packets when ED mode enabled
+ if (rf_mode != RF_MODE_ED)
+ {
+ rf_if_enable_rx_end_interrupt();
+ }
+ rf_if_unlock();
+ }
+}
+
+/*
+ * \brief Function calibrates the radio.
+ *
+ * \param none
+ *
+ * \return none
+ */
+static void rf_calibration_cb(void)
+{
+ /*clear tuned flag to start tuning in rf_receive*/
+ rf_tuned = 0;
+ /*If RF is in default receive state, start calibration*/
+ if(rf_if_read_trx_state() == RX_AACK_ON)
+ {
+ rf_if_lock();
+ /*Set RF in PLL_ON state*/
+ rf_if_change_trx_state(PLL_ON);
+ /*Set RF in TRX_OFF state to start PLL tuning*/
+ rf_if_change_trx_state(TRX_OFF);
+ /*Set RF in RX_ON state to calibrate*/
+ rf_if_change_trx_state(RX_ON);
+ /*Calibrate FTN*/
+ rf_if_calibration();
+ /*RF is tuned now*/
+ rf_tuned = 1;
+ /*Back to default receive state*/
+ rf_flags_clear(RFF_RX);
+ rf_receive();
+ rf_if_unlock();
+ }
+}
+
+/*
+ * \brief Function sets RF_ON flag when radio is powered.
+ *
+ * \param none
+ *
+ * \return none
+ */
+static void rf_on(void)
+{
+ /*Set RFF_ON flag*/
+ if(rf_flags_check(RFF_ON) == 0)
+ {
+ rf_if_lock();
+ rf_flags_set(RFF_ON);
+ /*Enable Antenna diversity*/
+ if(rf_use_antenna_diversity)
+ /*Set ANT_EXT_SW_EN to enable controlling of antenna diversity*/
+ rf_if_enable_ant_div();
+
+ /*Wake up from sleep state*/
+ rf_if_disable_slptr();
+ rf_poll_trx_state_change(TRX_OFF);
+ rf_if_unlock();
+ }
+}
+
+/*
+ * \brief Function handles the received ACK frame.
+ *
+ * \param seq_number Sequence number of received ACK
+ * \param data_pending Pending bit state in received ACK
+ *
+ * \return none
+ */
+static void rf_handle_ack(uint8_t seq_number, uint8_t data_pending)
+{
+ phy_link_tx_status_e phy_status;
+ rf_if_lock();
+ /*Received ACK sequence must be equal with transmitted packet sequence*/
+ if(expected_ack_sequence == seq_number)
+ {
+ rf_ack_wait_timer_stop();
+ expected_ack_sequence = -1;
+ /*When data pending bit in ACK frame is set, inform NET library*/
+ if(data_pending)
+ phy_status = PHY_LINK_TX_DONE_PENDING;
+ else
+ phy_status = PHY_LINK_TX_DONE;
+ /*Call PHY TX Done API*/
+ if(device_driver.phy_tx_done_cb){
+ device_driver.phy_tx_done_cb(rf_radio_driver_id, mac_tx_handle,phy_status, 0, 0);
+ }
+ }
+ rf_if_unlock();
+}
+
+/*
+ * \brief Function is a call back for RX end interrupt.
+ *
+ * \param none
+ *
+ * \return none
+ */
+static void rf_handle_rx_end(void)
+{
+ /*Start receiver*/
+ rf_flags_clear(RFF_RX);
+ rf_receive();
+
+ /*Frame received interrupt*/
+ if(!rf_flags_check(RFF_RX)) {
+ return;
+ }
+
+ static uint8_t rf_buffer[RF_MTU];
+ uint8_t rf_lqi, rf_ed;
+ int8_t rf_rssi;
+ bool crc_good;
+
+ /*Read received packet*/
+ uint8_t len = rf_if_read_packet(rf_buffer, &rf_lqi, &rf_ed, &crc_good);
+ if (len < 5 || !crc_good) {
+ return;
+ }
+
+ /* Convert raw ED to dBm value (chip-dependent) */
+ rf_rssi = rf_if_scale_rssi(rf_ed);
+
+ /* Create a virtual LQI using received RSSI, forgetting actual HW LQI */
+ /* (should be done through PHY_EXTENSION_CONVERT_SIGNAL_INFO) */
+ rf_lqi = rf_scale_lqi(rf_rssi);
+
+ /*Handle received ACK*/
+ if((rf_buffer[0] & 0x07) == 0x02 && rf_mode != RF_MODE_SNIFFER)
+ {
+ /*Check if data is pending*/
+ bool pending = (rf_buffer[0] & 0x10);
+
+ /*Send sequence number in ACK handler*/
+ rf_handle_ack(rf_buffer[2], pending);
+ } else {
+ if( device_driver.phy_rx_cb ){
+ device_driver.phy_rx_cb(rf_buffer, len - 2, rf_lqi, rf_rssi, rf_radio_driver_id);
+ }
+ }
+}
+
+/*
+ * \brief Function is called when MAC is shutting down the radio.
+ *
+ * \param none
+ *
+ * \return none
+ */
+static void rf_shutdown(void)
+{
+ /*Call RF OFF*/
+ rf_off();
+}
+
+/*
+ * \brief Function is a call back for TX end interrupt.
+ *
+ * \param none
+ *
+ * \return none
+ */
+static void rf_handle_tx_end(void)
+{
+ rf_rx_mode = 0;
+ /*If ACK is needed for this transmission*/
+ if((rf_tx_data[0] & 0x20) && rf_flags_check(RFF_TX))
+ {
+ expected_ack_sequence = rf_tx_data[2];
+ rf_ack_wait_timer_start(rf_ack_wait_duration);
+ rf_rx_mode = 1;
+ }
+ rf_flags_clear(RFF_RX);
+ /*Start receiver*/
+ rf_receive();
+
+ /*Call PHY TX Done API*/
+ if(device_driver.phy_tx_done_cb){
+ device_driver.phy_tx_done_cb(rf_radio_driver_id, mac_tx_handle, PHY_LINK_TX_SUCCESS, 0, 0);
+ }
+}
+
+/*
+ * \brief Function is a call back for CCA ED done interrupt.
+ *
+ * \param none
+ *
+ * \return none
+ */
+static void rf_handle_cca_ed_done(void)
+{
+ if (!rf_flags_check(RFF_CCA)) {
+ return;
+ }
+ rf_flags_clear(RFF_CCA);
+ /*Check the result of CCA process*/
+ if(rf_if_check_cca())
+ {
+ rf_start_tx();
+ }
+ else
+ {
+ /*Re-enable reception*/
+ rf_disable_static_frame_buffer_protection();
+ /*Send CCA fail notification*/
+ if(device_driver.phy_tx_done_cb){
+ device_driver.phy_tx_done_cb(rf_radio_driver_id, mac_tx_handle, PHY_LINK_CCA_FAIL, 0, 0);
+ }
+ }
+}
+
+/*
+ * \brief Function returns the TX power variable.
+ *
+ * \param none
+ *
+ * \return radio_tx_power TX power variable
+ */
+MBED_UNUSED static uint8_t rf_tx_power_get(void)
+{
+ return radio_tx_power;
+}
+
+/*
+ * \brief Function enables the usage of Antenna diversity.
+ *
+ * \param none
+ *
+ * \return 0 Success
+ */
+MBED_UNUSED static int8_t rf_enable_antenna_diversity(void)
+{
+ int8_t ret_val = 0;
+ rf_use_antenna_diversity = 1;
+ return ret_val;
+}
+
+/*
+ * \brief Function gives the control of RF states to MAC.
+ *
+ * \param new_state RF state
+ * \param rf_channel RF channel
+ *
+ * \return 0 Success
+ */
+static int8_t rf_interface_state_control(phy_interface_state_e new_state, uint8_t rf_channel)
+{
+ int8_t ret_val = 0;
+ switch (new_state)
+ {
+ /*Reset PHY driver and set to idle*/
+ case PHY_INTERFACE_RESET:
+ break;
+ /*Disable PHY Interface driver*/
+ case PHY_INTERFACE_DOWN:
+ rf_shutdown();
+ break;
+ /*Enable PHY Interface driver*/
+ case PHY_INTERFACE_UP:
+ rf_mode = RF_MODE_NORMAL;
+ rf_channel_set(rf_channel);
+ rf_receive();
+ rf_if_enable_irq();
+ break;
+ /*Enable wireless interface ED scan mode*/
+ case PHY_INTERFACE_RX_ENERGY_STATE:
+ rf_mode = RF_MODE_ED;
+ rf_channel_set(rf_channel);
+ rf_receive();
+ rf_if_disable_irq();
+ // Read status to clear pending flags.
+ rf_if_read_register(IRQ_STATUS);
+ // Must set interrupt mask to be able to read IRQ status. GPIO interrupt is disabled.
+ rf_if_enable_cca_ed_done_interrupt();
+ // ED can be initiated by writing arbitrary value to PHY_ED_LEVEL
+ rf_if_write_register(PHY_ED_LEVEL, 0xff);
+ break;
+ case PHY_INTERFACE_SNIFFER_STATE: /**< Enable Sniffer state */
+ rf_mode = RF_MODE_SNIFFER;
+ rf_channel_set(rf_channel);
+ rf_flags_clear(RFF_RX);
+ rf_receive();
+ rf_if_enable_irq();
+ break;
+ }
+ return ret_val;
+}
+
+/*
+ * \brief Function controls the ACK pending, channel setting and energy detection.
+ *
+ * \param extension_type Type of control
+ * \param data_ptr Data from NET library
+ *
+ * \return 0 Success
+ */
+static int8_t rf_extension(phy_extension_type_e extension_type, uint8_t *data_ptr)
+{
+ switch (extension_type)
+ {
+ /*Control MAC pending bit for Indirect data transmission*/
+ case PHY_EXTENSION_CTRL_PENDING_BIT:
+ if(*data_ptr)
+ {
+ rf_if_ack_pending_ctrl(1);
+ }
+ else
+ {
+ rf_if_ack_pending_ctrl(0);
+ }
+ break;
+ /*Return frame pending status*/
+ case PHY_EXTENSION_READ_LAST_ACK_PENDING_STATUS:
+ *data_ptr = rf_if_last_acked_pending();
+ break;
+ /*Set channel*/
+ case PHY_EXTENSION_SET_CHANNEL:
+ break;
+ /*Read energy on the channel*/
+ case PHY_EXTENSION_READ_CHANNEL_ENERGY:
+ // End of the ED measurement is indicated by CCA_ED_DONE
+ while (!(rf_if_read_register(IRQ_STATUS) & CCA_ED_DONE));
+ // RF input power: RSSI base level + 1[db] * PHY_ED_LEVEL
+ *data_ptr = rf_sensitivity + rf_if_read_register(PHY_ED_LEVEL);
+ // Read status to clear pending flags.
+ rf_if_read_register(IRQ_STATUS);
+ // Next ED measurement is started, next PHY_EXTENSION_READ_CHANNEL_ENERGY call will return the result.
+ rf_if_write_register(PHY_ED_LEVEL, 0xff);
+ break;
+ /*Read status of the link*/
+ case PHY_EXTENSION_READ_LINK_STATUS:
+ break;
+ default:
+ break;
+ }
+ return 0;
+}
+
+/*
+ * \brief Function sets the addresses to RF address filters.
+ *
+ * \param address_type Type of address
+ * \param address_ptr Pointer to given address
+ *
+ * \return 0 Success
+ */
+static int8_t rf_address_write(phy_address_type_e address_type, uint8_t *address_ptr)
+{
+ int8_t ret_val = 0;
+ switch (address_type)
+ {
+ /*Set 48-bit address*/
+ case PHY_MAC_48BIT:
+ break;
+ /*Set 64-bit address*/
+ case PHY_MAC_64BIT:
+ rf_set_address(address_ptr);
+ break;
+ /*Set 16-bit address*/
+ case PHY_MAC_16BIT:
+ rf_set_short_adr(address_ptr);
+ break;
+ /*Set PAN Id*/
+ case PHY_MAC_PANID:
+ rf_set_pan_id(address_ptr);
+ break;
+ }
+ return ret_val;
+}
+
+/*
+ * \brief Function initialises the ACK wait time and returns the used PHY mode.
+ *
+ * \param none
+ *
+ * \return tmp Used PHY mode
+ */
+static void rf_init_phy_mode(void)
+{
+ uint8_t tmp = 0;
+ uint8_t part = rf_if_read_part_num();
+ /*Read used PHY Mode*/
+ tmp = rf_if_read_register(TRX_CTRL_2);
+ /*Set ACK wait time for used data rate*/
+ if(part == PART_AT86RF212)
+ {
+ if((tmp & 0x1f) == 0x00)
+ {
+ rf_sensitivity = -110;
+ rf_ack_wait_duration = 938;
+ tmp = BPSK_20;
+ }
+ else if((tmp & 0x1f) == 0x04)
+ {
+ rf_sensitivity = -108;
+ rf_ack_wait_duration = 469;
+ tmp = BPSK_40;
+ }
+ else if((tmp & 0x1f) == 0x14)
+ {
+ rf_sensitivity = -108;
+ rf_ack_wait_duration = 469;
+ tmp = BPSK_40_ALT;
+ }
+ else if((tmp & 0x1f) == 0x08)
+ {
+ rf_sensitivity = -101;
+ rf_ack_wait_duration = 50;
+ tmp = OQPSK_SIN_RC_100;
+ }
+ else if((tmp & 0x1f) == 0x09)
+ {
+ rf_sensitivity = -99;
+ rf_ack_wait_duration = 30;
+ tmp = OQPSK_SIN_RC_200;
+ }
+ else if((tmp & 0x1f) == 0x18)
+ {
+ rf_sensitivity = -102;
+ rf_ack_wait_duration = 50;
+ tmp = OQPSK_RC_100;
+ }
+ else if((tmp & 0x1f) == 0x19)
+ {
+ rf_sensitivity = -100;
+ rf_ack_wait_duration = 30;
+ tmp = OQPSK_RC_200;
+ }
+ else if((tmp & 0x1f) == 0x0c)
+ {
+ rf_sensitivity = -100;
+ rf_ack_wait_duration = 20;
+ tmp = OQPSK_SIN_250;
+ }
+ else if((tmp & 0x1f) == 0x0d)
+ {
+ rf_sensitivity = -98;
+ rf_ack_wait_duration = 25;
+ tmp = OQPSK_SIN_500;
+ }
+ else if((tmp & 0x1f) == 0x0f)
+ {
+ rf_sensitivity = -98;
+ rf_ack_wait_duration = 25;
+ tmp = OQPSK_SIN_500_ALT;
+ }
+ else if((tmp & 0x1f) == 0x1c)
+ {
+ rf_sensitivity = -101;
+ rf_ack_wait_duration = 20;
+ tmp = OQPSK_RC_250;
+ }
+ else if((tmp & 0x1f) == 0x1d)
+ {
+ rf_sensitivity = -99;
+ rf_ack_wait_duration = 25;
+ tmp = OQPSK_RC_500;
+ }
+ else if((tmp & 0x1f) == 0x1f)
+ {
+ rf_sensitivity = -99;
+ rf_ack_wait_duration = 25;
+ tmp = OQPSK_RC_500_ALT;
+ }
+ else if((tmp & 0x3f) == 0x2A)
+ {
+ rf_sensitivity = -91;
+ rf_ack_wait_duration = 25;
+ tmp = OQPSK_SIN_RC_400_SCR_ON;
+ }
+ else if((tmp & 0x3f) == 0x0A)
+ {
+ rf_sensitivity = -91;
+ rf_ack_wait_duration = 25;
+ tmp = OQPSK_SIN_RC_400_SCR_OFF;
+ }
+ else if((tmp & 0x3f) == 0x3A)
+ {
+ rf_sensitivity = -97;
+ rf_ack_wait_duration = 25;
+ tmp = OQPSK_RC_400_SCR_ON;
+ }
+ else if((tmp & 0x3f) == 0x1A)
+ {
+ rf_sensitivity = -97;
+ rf_ack_wait_duration = 25;
+ tmp = OQPSK_RC_400_SCR_OFF;
+ }
+ else if((tmp & 0x3f) == 0x2E)
+ {
+ rf_sensitivity = -93;
+ rf_ack_wait_duration = 13;
+ tmp = OQPSK_SIN_1000_SCR_ON;
+ }
+ else if((tmp & 0x3f) == 0x0E)
+ {
+ rf_sensitivity = -93;
+ rf_ack_wait_duration = 13;
+ tmp = OQPSK_SIN_1000_SCR_OFF;
+ }
+ else if((tmp & 0x3f) == 0x3E)
+ {
+ rf_sensitivity = -95;
+ rf_ack_wait_duration = 13;
+ tmp = OQPSK_RC_1000_SCR_ON;
+ }
+ else if((tmp & 0x3f) == 0x1E)
+ {
+ rf_sensitivity = -95;
+ rf_ack_wait_duration = 13;
+ tmp = OQPSK_RC_1000_SCR_OFF;
+ }
+ }
+ else
+ {
+ rf_sensitivity = -101;
+ rf_ack_wait_duration = 20;
+ }
+ /*Board design might reduces the sensitivity*/
+ //rf_sensitivity += RF_SENSITIVITY_CALIBRATION;
+}
+
+
+static uint8_t rf_scale_lqi(int8_t rssi)
+{
+ uint8_t scaled_lqi;
+
+ /*rssi < RF sensitivity*/
+ if(rssi < rf_sensitivity)
+ scaled_lqi=0;
+ /*-91 dBm < rssi < -81 dBm (AT86RF233 XPro)*/
+ /*-90 dBm < rssi < -80 dBm (AT86RF212B XPro)*/
+ else if(rssi < (rf_sensitivity + 10))
+ scaled_lqi=31;
+ /*-81 dBm < rssi < -71 dBm (AT86RF233 XPro)*/
+ /*-80 dBm < rssi < -70 dBm (AT86RF212B XPro)*/
+ else if(rssi < (rf_sensitivity + 20))
+ scaled_lqi=207;
+ /*-71 dBm < rssi < -61 dBm (AT86RF233 XPro)*/
+ /*-70 dBm < rssi < -60 dBm (AT86RF212B XPro)*/
+ else if(rssi < (rf_sensitivity + 30))
+ scaled_lqi=255;
+ /*-61 dBm < rssi < -51 dBm (AT86RF233 XPro)*/
+ /*-60 dBm < rssi < -50 dBm (AT86RF212B XPro)*/
+ else if(rssi < (rf_sensitivity + 40))
+ scaled_lqi=255;
+ /*-51 dBm < rssi < -41 dBm (AT86RF233 XPro)*/
+ /*-50 dBm < rssi < -40 dBm (AT86RF212B XPro)*/
+ else if(rssi < (rf_sensitivity + 50))
+ scaled_lqi=255;
+ /*-41 dBm < rssi < -31 dBm (AT86RF233 XPro)*/
+ /*-40 dBm < rssi < -30 dBm (AT86RF212B XPro)*/
+ else if(rssi < (rf_sensitivity + 60))
+ scaled_lqi=255;
+ /*-31 dBm < rssi < -21 dBm (AT86RF233 XPro)*/
+ /*-30 dBm < rssi < -20 dBm (AT86RF212B XPro)*/
+ else if(rssi < (rf_sensitivity + 70))
+ scaled_lqi=255;
+ /*rssi > RF saturation*/
+ else if(rssi > (rf_sensitivity + 80))
+ scaled_lqi=111;
+ /*-21 dBm < rssi < -11 dBm (AT86RF233 XPro)*/
+ /*-20 dBm < rssi < -10 dBm (AT86RF212B XPro)*/
+ else
+ scaled_lqi=255;
+
+ return scaled_lqi;
+}
+
+NanostackRfPhyAtmel::NanostackRfPhyAtmel(PinName spi_mosi, PinName spi_miso,
+ PinName spi_sclk, PinName spi_cs, PinName spi_rst, PinName spi_slp, PinName spi_irq,
+ PinName i2c_sda, PinName i2c_scl)
+ : _mac(i2c_sda, i2c_scl), _mac_addr(), _rf(NULL), _mac_set(false),
+ _spi_mosi(spi_mosi), _spi_miso(spi_miso), _spi_sclk(spi_sclk),
+ _spi_cs(spi_cs), _spi_rst(spi_rst), _spi_slp(spi_slp), _spi_irq(spi_irq)
+{
+ _rf = new RFBits(_spi_mosi, _spi_miso, _spi_sclk, _spi_cs, _spi_rst, _spi_slp, _spi_irq);
+}
+
+NanostackRfPhyAtmel::~NanostackRfPhyAtmel()
+{
+ delete _rf;
+}
+
+int8_t NanostackRfPhyAtmel::rf_register()
+{
+ if (NULL == _rf) {
+ return -1;
+ }
+
+ rf_if_lock();
+
+ if (rf != NULL) {
+ rf_if_unlock();
+ error("Multiple registrations of NanostackRfPhyAtmel not supported");
+ return -1;
+ }
+
+ // Read the mac address if it hasn't been set by a user
+ rf = _rf;
+ if (!_mac_set) {
+ int ret = _mac.read_eui64((void*)_mac_addr);
+ if (ret < 0) {
+ rf = NULL;
+ rf_if_unlock();
+ return -1;
+ }
+ }
+
+ int8_t radio_id = rf_device_register(_mac_addr);
+ if (radio_id < 0) {
+ rf = NULL;
+ }
+
+ rf_if_unlock();
+ return radio_id;
+}
+
+void NanostackRfPhyAtmel::rf_unregister()
+{
+ rf_if_lock();
+
+ if (NULL == rf) {
+ rf_if_unlock();
+ return;
+ }
+
+ rf_device_unregister();
+ rf = NULL;
+
+ rf_if_unlock();
+}
+
+void NanostackRfPhyAtmel::get_mac_address(uint8_t *mac)
+{
+ rf_if_lock();
+
+ if (NULL == rf) {
+ error("NanostackRfPhyAtmel Must be registered to read mac address");
+ rf_if_unlock();
+ return;
+ }
+ memcpy((void*)mac, (void*)_mac_addr, sizeof(_mac_addr));
+
+ rf_if_unlock();
+}
+
+void NanostackRfPhyAtmel::set_mac_address(uint8_t *mac)
+{
+ rf_if_lock();
+
+ if (NULL != rf) {
+ error("NanostackRfPhyAtmel cannot change mac address when running");
+ rf_if_unlock();
+ return;
+ }
+ memcpy((void*)_mac_addr, (void*)mac, sizeof(_mac_addr));
+ _mac_set = true;
+
+ rf_if_unlock();
+}
+