| /* |
| * Copyright (c) 2016, The OpenThread Authors. |
| * All rights reserved. |
| * |
| * 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. Neither the name of the copyright holder nor the |
| * names of its contributors may be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS 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. |
| */ |
| |
| /** |
| * @file clock.c |
| * Clock init for Dialog da15000. |
| * |
| */ |
| #include "sdk_defs.h" |
| #include "hw_cpm.h" |
| #include "hw_watchdog.h" |
| |
| volatile uint8_t xtal16_settled = 0; |
| |
| extern void XTAL16RDY_Handler(void); |
| |
| /* The highest interrupt priority that can be used by any interrupt service |
| routine that makes calls to interrupt safe FreeRTOS API functions. |
| DO NOT CALL INTERRUPT SAFE FREERTOS API FUNCTIONS FROM ANY INTERRUPT |
| THAT HAS A HIGHER PRIORITY THAN THIS! (higher priorities are lower |
| numeric values on an ARM Cortex-M). */ |
| #define configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY 1 |
| |
| void switch_to_rc16(void) |
| { |
| if (!hw_cpm_check_rc16_status()) // RC16 is disabled |
| { |
| hw_cpm_enable_rc16(); // Enable RC16 |
| hw_cpm_short_delay(); // Wait until it is stable |
| } |
| |
| // fast --> slow clock switch |
| hw_cpm_set_sysclk(SYS_CLK_IS_RC16); // Set RC16 as sys_clk |
| //cm_adjust_otp_access_timings(); // Adjust OTP timings |
| } |
| |
| |