01e36532c2
This commit: * Moves all cpu files from cpu/cc26xx to cpu/cc26xx-cc13xx * Bumps the CC26xxware submodule to the latest TI release * Adds CC13xxware as a submodule * Adds support for sub-ghz mode / IEEE 802.15.4g * Splits the driver into multiple files for clarity. We now have the following structure: * A common module that handles access to the RF core, interrupts etc * A module that takes care of BLE functionality * A netstack radio driver for IEEE mode (2.4GHz) * A netstack radio driver for PROP mode (sub-ghz - multiple bands) This commit also adds tick suppression functionality, applicable to all chips of the CC26xx and CC13xx families. Instead waking up on every clock tick simply to increment our software counter, we now only wake up just in time to service the next scheduled etimer. ContikiMAC-triggered wakeups are unaffected. Laslty, this commit also applies a number of minor changes: * Addition of missing includes * Removal of stub functions * Removal of a woraround for a CC26xxware bug that has now been fixed
170 lines
6.5 KiB
C
170 lines
6.5 KiB
C
/*
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* Copyright (c) 2015, Texas Instruments Incorporated - http://www.ti.com/
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the copyright holder nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*---------------------------------------------------------------------------*/
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/**
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* \addtogroup cc26xx-oscillators
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* @{
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*
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* \file
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* Implementation of CC26xxware oscillator control wrappers.
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*/
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/*---------------------------------------------------------------------------*/
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#include "ti-lib.h"
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#include <stdint.h>
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/*---------------------------------------------------------------------------*/
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static uint32_t
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osc_interface_en(void)
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{
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uint32_t smph_clk_state;
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/* Enable OSC DIG interface to change clock sources */
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ti_lib_osc_interface_enable();
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/* Save the state of the SMPH clock within AUX */
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smph_clk_state = ti_lib_aux_wuc_clock_status(AUX_WUC_SMPH_CLOCK);
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/* Make sure the SMPH clock within AUX is enabled */
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ti_lib_aux_wuc_clock_enable(AUX_WUC_SMPH_CLOCK);
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while(ti_lib_aux_wuc_clock_status(AUX_WUC_SMPH_CLOCK) != AUX_WUC_CLOCK_READY);
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return smph_clk_state;
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}
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/*---------------------------------------------------------------------------*/
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static void
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osc_interface_dis(uint32_t smph_clk_state)
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{
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/* If the SMPH clock was off, turn it back off */
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if(smph_clk_state == AUX_WUC_CLOCK_OFF) {
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ti_lib_aux_wuc_clock_disable(AUX_WUC_SMPH_CLOCK);
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}
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/* Disable OSC DIG interface */
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ti_lib_osc_interface_disable();
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}
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/*---------------------------------------------------------------------------*/
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void
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oscillators_select_lf_xosc(void)
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{
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/* Enable the Osc interface and remember the state of the SMPH clock */
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uint32_t smph_clk_state = osc_interface_en();
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/* Switch LF clock source to the LF XOSC if required */
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if(ti_lib_osc_clock_source_get(OSC_SRC_CLK_LF) != OSC_XOSC_LF) {
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ti_lib_osc_clock_source_set(OSC_SRC_CLK_LF, OSC_XOSC_LF);
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/* Wait for LF clock source to become XOSC_LF */
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while(ti_lib_osc_clock_source_get(OSC_SRC_CLK_LF) != OSC_XOSC_LF);
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/* Disable the LF clock qualifiers */
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ti_lib_ddi_16_bit_field_write(AUX_DDI0_OSC_BASE, DDI_0_OSC_O_CTL0,
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DDI_0_OSC_CTL0_BYPASS_XOSC_LF_CLK_QUAL_M |
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DDI_0_OSC_CTL0_BYPASS_RCOSC_LF_CLK_QUAL_M,
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DDI_0_OSC_CTL0_BYPASS_RCOSC_LF_CLK_QUAL_S,
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0x3);
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}
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/* Restore the SMPH clock and disable the OSC interface */
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osc_interface_dis(smph_clk_state);
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}
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/*---------------------------------------------------------------------------*/
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void
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oscillators_select_lf_rcosc(void)
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{
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/* Enable the Osc interface and remember the state of the SMPH clock */
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uint32_t smph_clk_state = osc_interface_en();
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/* Switch LF clock source to the LF XOSC if required */
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if(ti_lib_osc_clock_source_get(OSC_SRC_CLK_LF) != OSC_RCOSC_LF) {
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ti_lib_osc_clock_source_set(OSC_SRC_CLK_LF, OSC_RCOSC_LF);
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/* Wait for LF clock source to become XOSC_LF */
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while(ti_lib_osc_clock_source_get(OSC_SRC_CLK_LF) != OSC_RCOSC_LF);
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}
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/* Restore the SMPH clock and disable the OSC interface */
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osc_interface_dis(smph_clk_state);
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}
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/*---------------------------------------------------------------------------*/
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void
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oscillators_request_hf_xosc(void)
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{
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/* Enable the Osc interface and remember the state of the SMPH clock */
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uint32_t smph_clk_state = osc_interface_en();
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if(ti_lib_osc_clock_source_get(OSC_SRC_CLK_HF) != OSC_XOSC_HF) {
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/*
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* Request to switch to the crystal to enable radio operation. It takes a
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* while for the XTAL to be ready so instead of performing the actual
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* switch, we return and we do other stuff while the XOSC is getting ready.
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*/
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ti_lib_osc_clock_source_set(OSC_SRC_CLK_MF | OSC_SRC_CLK_HF, OSC_XOSC_HF);
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}
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/* Restore the SMPH clock and disable the OSC interface */
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osc_interface_dis(smph_clk_state);
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}
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/*---------------------------------------------------------------------------*/
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void
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oscillators_switch_to_hf_xosc(void)
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{
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/* Enable the Osc interface and remember the state of the SMPH clock */
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uint32_t smph_clk_state = osc_interface_en();
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if(ti_lib_osc_clock_source_get(OSC_SRC_CLK_HF) != OSC_XOSC_HF) {
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/* Switch the HF clock source (cc26xxware executes this from ROM) */
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ti_lib_osc_hf_source_switch();
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}
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/* Restore the SMPH clock and disable the OSC interface */
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osc_interface_dis(smph_clk_state);
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}
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/*---------------------------------------------------------------------------*/
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void
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oscillators_switch_to_hf_rc(void)
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{
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/* Enable the Osc interface and remember the state of the SMPH clock */
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uint32_t smph_clk_state = osc_interface_en();
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/* Set all clock sources to the HF RC Osc */
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ti_lib_osc_clock_source_set(OSC_SRC_CLK_MF | OSC_SRC_CLK_HF, OSC_RCOSC_HF);
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/* Check to not enable HF RC oscillator if already enabled */
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if(ti_lib_osc_clock_source_get(OSC_SRC_CLK_HF) != OSC_RCOSC_HF) {
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/* Switch the HF clock source (cc26xxware executes this from ROM) */
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ti_lib_osc_hf_source_switch();
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}
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/* Restore the SMPH clock and disable the OSC interface */
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osc_interface_dis(smph_clk_state);
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}
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/*---------------------------------------------------------------------------*/
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/** @} */
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