pico-WSPR-tx/init.c

74 wiersze
2.5 KiB
C

///////////////////////////////////////////////////////////////////////////////
//
// Roman Piksaykin [piksaykin@gmail.com], R2BDY
// https://www.qrz.com/db/r2bdy
//
///////////////////////////////////////////////////////////////////////////////
//
//
// init.c - Pico hardware initializations.
//
// DESCRIPTION
// The pico-WSPR-tx project provides WSPR beacon function using only
// Pi Pico board. *NO* additional hardware such as freq.synth required.
//
// HOWTOSTART
// .
//
// PLATFORM
// Raspberry Pi pico.
//
// REVISION HISTORY
//
// Rev 0.1 18 Nov 2023
// Initial release.
//
// PROJECT PAGE
// https://github.com/RPiks/pico-WSPR-tx
//
// LICENCE
// MIT License (http://www.opensource.org/licenses/mit-license.php)
//
// Copyright (c) 2023 by Roman Piksaykin
//
// Permission is hereby granted, free of charge,to any person obtaining a copy
// of this software and associated documentation files (the Software), to deal
// in the Software without restriction,including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY,WHETHER IN AN ACTION OF CONTRACT,TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
///////////////////////////////////////////////////////////////////////////////
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include "pico/stdlib.h"
#include "hardware/clocks.h"
#include <defines.h>
/// @brief Initializes Pi pico low level hardware.
void InitPicoHW(void)
{
gpio_init(PICO_DEFAULT_LED_PIN);
gpio_set_dir(PICO_DEFAULT_LED_PIN, GPIO_OUT);
const uint32_t clkhz = PLL_SYS_MHZ * 1000000L;
set_sys_clock_khz(clkhz / kHz, true);
clock_configure(clk_peri, 0,
CLOCKS_CLK_PERI_CTRL_AUXSRC_VALUE_CLKSRC_PLL_SYS,
PLL_SYS_MHZ * MHZ,
PLL_SYS_MHZ * MHZ);
}