diff options
Diffstat (limited to 'nuttx/arch/arm/src/stm32/stm32_lsi.c')
-rw-r--r-- | nuttx/arch/arm/src/stm32/stm32_lsi.c | 100 |
1 files changed, 0 insertions, 100 deletions
diff --git a/nuttx/arch/arm/src/stm32/stm32_lsi.c b/nuttx/arch/arm/src/stm32/stm32_lsi.c deleted file mode 100644 index e365fbf06..000000000 --- a/nuttx/arch/arm/src/stm32/stm32_lsi.c +++ /dev/null @@ -1,100 +0,0 @@ -/**************************************************************************** - * arch/arm/src/stm32/stm32_lsi.c - * - * Copyright (C) 2012 Gregory Nutt. All rights reserved. - * Author: Gregory Nutt <gnutt@nuttx.orgr> - * - * 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 NuttX 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 OWNER 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. - * - ****************************************************************************/ - -/**************************************************************************** - * Included Files - ****************************************************************************/ - -#include <nuttx/config.h> - -#include "up_arch.h" - -#include "stm32_rcc.h" - -/**************************************************************************** - * Definitions - ****************************************************************************/ - -/**************************************************************************** - * Private Data - ****************************************************************************/ - -/**************************************************************************** - * Private Functions - ****************************************************************************/ - -/**************************************************************************** - * Public Functions - ****************************************************************************/ - -/**************************************************************************** - * Name: stm32_rcc_enablelsi - * - * Description: - * Enable the Internal Low-Speed (LSI) RC Oscillator. - * - ****************************************************************************/ - -void stm32_rcc_enablelsi(void) -{ - /* Enable the Internal Low-Speed (LSI) RC Oscillator by setting the LSION bit - * the RCC CSR register. - */ - - modifyreg32(STM32_RCC_CSR, 0, RCC_CSR_LSION); - - /* Wait for the internal RC 40 kHz oscillator to be stable. */ - - while ((getreg32(STM32_RCC_CSR) & RCC_CSR_LSIRDY) == 0); -} - -/**************************************************************************** - * Name: stm32_rcc_disablelsi - * - * Description: - * Disable the Internal Low-Speed (LSI) RC Oscillator. - * - ****************************************************************************/ - -void stm32_rcc_disablelsi(void) -{ - /* Enable the Internal Low-Speed (LSI) RC Oscillator by setting the LSION bit - * the RCC CSR register. - */ - - modifyreg32(STM32_RCC_CSR, RCC_CSR_LSION, 0); - - /* LSIRDY should go low after 3 LSI clock cycles */ -} |