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/**
* \file
*
* \brief SAM Configurable Custom Logic (CCL) Driver
*
* Copyright (C) 2014-2015 Atmel Corporation. All rights reserved.
*
* \asf_license_start
*
* \page License
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* 3. The name of Atmel may not be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* 4. This software may only be redistributed and used in connection with an
* Atmel microcontroller product.
*
* THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
* EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* \asf_license_stop
*
*/
/*
* Support and FAQ: visit <a href="http://www.atmel.com/design-support/">Atmel Support</a>
*/
#include "ccl.h"
void ccl_init(struct ccl_config *const config)
{
#if (SAML22) || (SAMC20) || (SAMC21)
/* Turn on the digital interface clock. */
system_apb_clock_set_mask(SYSTEM_CLOCK_APB_APBC, MCLK_APBCMASK_CCL);
#else
/* Turn on the digital interface clock. */
system_apb_clock_set_mask(SYSTEM_CLOCK_APB_APBD, MCLK_APBDMASK_CCL);
#endif
/* Reset module. */
ccl_module_reset();
/* Configure GCLK channel and enable clock */
struct system_gclk_chan_config gclk_chan_conf;
system_gclk_chan_get_config_defaults(&gclk_chan_conf);
gclk_chan_conf.source_generator = config->clock_source;
system_gclk_chan_set_config(CCL_GCLK_ID, &gclk_chan_conf);
system_gclk_chan_enable(CCL_GCLK_ID);
if(config->run_in_standby) {
/* Enable run in standy mode. */
CCL->CTRL.reg |= CCL_CTRL_RUNSTDBY;
} else {
/* Disable run in standy mode. */
CCL->CTRL.reg &= ~ CCL_CTRL_RUNSTDBY;
}
}
void ccl_lut_get_config_defaults(struct ccl_lut_config *const config)
{
/* Sanity check arguments */
Assert(config);
/* Default configuration values */
config->truth_table_value = 0x00;
config->event_output_enable = false;
config->event_input_enable = false;
config->event_input_inverted_enable = false;
config->input0_src_sel = CCL_LUT_INPUT_SRC_MASK;
config->input1_src_sel = CCL_LUT_INPUT_SRC_MASK;
config->input2_src_sel = CCL_LUT_INPUT_SRC_MASK;
config->edge_selection_enable = false;
config->filter_sel = CCL_LUT_FILTER_DISABLE;
}
enum status_code ccl_lut_set_config(const enum ccl_lut_id number,
struct ccl_lut_config *const config)
{
/* Sanity check arguments */
Assert(config);
uint32_t temp = 0;
if(CCL->CTRL.reg & CCL_CTRL_ENABLE)
return STATUS_BUSY;
if (config->event_output_enable) {
temp |= CCL_LUTCTRL_LUTEO;
}
if (config->event_input_enable) {
temp |= CCL_LUTCTRL_LUTEI;
}
if (config->event_input_inverted_enable) {
temp |= CCL_LUTCTRL_INVEI;
}
if (config->edge_selection_enable) {
temp |= CCL_LUTCTRL_EDGESEL;
}
CCL->LUTCTRL[number].reg = temp |
CCL_LUTCTRL_INSEL0(config->input0_src_sel) |
CCL_LUTCTRL_INSEL1(config->input1_src_sel) |
CCL_LUTCTRL_INSEL2(config->input2_src_sel) |
CCL_LUTCTRL_TRUTH(config->truth_table_value) |
config->filter_sel;
return STATUS_OK;
}
enum status_code ccl_seq_config(const enum ccl_seq_id number,
const enum ccl_seq_selection seq_selection)
{
if(CCL->CTRL.reg & CCL_CTRL_ENABLE)
return STATUS_BUSY;
CCL->SEQCTRL[number].reg = seq_selection;
return STATUS_OK;
}
void ccl_lut_enable(const enum ccl_lut_id number)
{
/* Enable the LUTx */
CCL->LUTCTRL[number].reg |= CCL_LUTCTRL_ENABLE;
}
void ccl_lut_disable(const enum ccl_lut_id number)
{
/* Disable the LUTx */
CCL->LUTCTRL[number].reg &= ~CCL_LUTCTRL_ENABLE;
}
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