Initial implementation of DAC registers for stm32 by Felix Held
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Piotr Esden-Tempski
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/*
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* This file is part of the libopencm3 project.
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*
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* Copyright (C) 2012 Felix Held <felix-libopencm3@felixheld.de>
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*
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* This library is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef LIBOPENCM3_DAC_H
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#define LIBOPENCM3_DAC_H
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#include <libopencm3/stm32/memorymap.h>
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#include <libopencm3/cm3/common.h>
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/* --- DAC registers ------------------------------------------------------- */
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/* DAC control register (DAC_CR) */
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#define DAC_CR MMIO32(DAC_BASE + 0x00)
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/* DAC software trigger register (DAC_SWTRIGR) */
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#define DAC_SWTRIGR MMIO32(DAC_BASE + 0x04)
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/* DAC channel1 12-bit right-aligned data holding register (DAC_DHR12R1) */
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#define DAC_DHR12R1 MMIO32(DAC_BASE + 0x08)
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/* DAC channel1 12-bit left aligned data holding register (DAC_DHR12L1) */
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#define DAC_DHR12L1 MMIO32(DAC_BASE + 0x0C)
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/* DAC channel1 8-bit right aligned data holding register (DAC_DHR8R1) */
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#define DAC_DHR8R1 MMIO32(DAC_BASE + 0x10)
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/* DAC channel2 12-bit right aligned data holding register (DAC_DHR12R2) */
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#define DAC_DHR12R2 MMIO32(DAC_BASE + 0x14)
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/* DAC channel2 12-bit left aligned data holding register (DAC_DHR12L2) */
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#define DAC_DHR12L2 MMIO32(DAC_BASE + 0x18)
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/* DAC channel2 8-bit right-aligned data holding register (DAC_DHR8R2) */
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#define DAC_DHR8R2 MMIO32(DAC_BASE + 0x1C)
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/* Dual DAC 12-bit right-aligned data holding register (DAC_DHR12RD) */
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#define DAC_DHR12RD MMIO32(DAC_BASE + 0x20)
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/* DUAL DAC 12-bit left aligned data holding register (DAC_DHR12LD) */
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#define DAC_DHR12LD MMIO32(DAC_BASE + 0x24)
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/* DUAL DAC 8-bit right aligned data holding register (DAC_DHR8RD) */
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#define DAC_DHR8RD MMIO32(DAC_BASE + 0x28)
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/* DAC channel1 data output register (DAC_DOR1) */
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#define DAC_DOR1 MMIO32(DAC_BASE + 0x2C)
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/* DAC channel2 data output register (DAC_DOR2) */
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#define DAC_DOR2 MMIO32(DAC_BASE + 0x30)
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/* --- DAC_CR values ------------------------------------------------------- */
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/* DMAUDRIE2: DAC channel2 DMA underrun interrupt enable */
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/* doesn't exist in most members of the stm32f1 family */
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#define DAC_CR_DMAUDRIE2 (1 << 29)
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/* DMAEN2: DAC channel2 DMA enable */
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#define DAC_CR_DMAEN2 (1 << 28)
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/* MAMP2[3:0]: DAC channel2 mask/amplitude selector */
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/* DAC_CR_MAMP2_n:
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* Unmask bits [(n-1)..0] of LFSR/Triangle Amplitude equal to (2**n)-1
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*/
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#define DAC_CR_MAMP2_SHIFT 24
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#define DAC_CR_MAMP2_1 (0x0 << DAC_CR_MAMP2_SHIFT)
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#define DAC_CR_MAMP2_2 (0x1 << DAC_CR_MAMP2_SHIFT)
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#define DAC_CR_MAMP2_3 (0x2 << DAC_CR_MAMP2_SHIFT)
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#define DAC_CR_MAMP2_4 (0x3 << DAC_CR_MAMP2_SHIFT)
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#define DAC_CR_MAMP2_5 (0x4 << DAC_CR_MAMP2_SHIFT)
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#define DAC_CR_MAMP2_6 (0x5 << DAC_CR_MAMP2_SHIFT)
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#define DAC_CR_MAMP2_7 (0x6 << DAC_CR_MAMP2_SHIFT)
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#define DAC_CR_MAMP2_8 (0x7 << DAC_CR_MAMP2_SHIFT)
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#define DAC_CR_MAMP2_9 (0x8 << DAC_CR_MAMP2_SHIFT)
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#define DAC_CR_MAMP2_10 (0x9 << DAC_CR_MAMP2_SHIFT)
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#define DAC_CR_MAMP2_11 (0xA << DAC_CR_MAMP2_SHIFT)
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#define DAC_CR_MAMP2_12 (0xB << DAC_CR_MAMP2_SHIFT)
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/* WAVE2[1:0]: DAC channel2 noise/triangle wave generation enable */
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/* Legend:
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* DIS: wave generation disabled
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* NOISE: Noise wave generation enabled
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* TRI: Triangle wave generation enabled
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*
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* Note: only used if bit TEN2 = 1 (DAC channel2 trigger enabled)
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*/
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#define DAC_CR_WAVE2_SHIFT 22
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#define DAC_CR_WAVE2_DIS (0x0 << DAC_CR_WAVE2_SHIFT)
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#define DAC_CR_WAVE2_NOISE (0x1 << DAC_CR_WAVE2_SHIFT)
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#define DAC_CR_WAVE2_TRI (0x2 << DAC_CR_WAVE2_SHIFT)
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/* TSEL2[2:0]: DAC channel2 trigger selection */
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/* Legend:
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*
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* T6: Timer 6 TRGO event
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* T3: Timer 3 TRGO event
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* T8: Timer 8 TRGO event
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* T7: Timer 7 TRGO event
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* T5: Timer 5 TRGO event
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* T15: Timer 15 TRGO event
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* T2: Timer 2 TRGO event
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* T4: Timer 4 TRGO event
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* E9: External line9
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* SW: Software trigger
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*
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* Note: only used if bit TEN2 = 1 (DAC channel2 trigger enabled)
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* Note: T3 == T8; T5 == T15; not both present on one device
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* Note: this is *not* valid for the STM32L1 family
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*/
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#define DAC_CR_TSEL2_SHIFT 19
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#define DAC_CR_TSEL2_T6 (0x0 << DAC_CR_TSEL2_SHIFT)
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#define DAC_CR_TSEL2_T3 (0x1 << DAC_CR_TSEL2_SHIFT)
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#define DAC_CR_TSEL2_T8 (0x1 << DAC_CR_TSEL2_SHIFT)
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#define DAC_CR_TSEL2_T7 (0x2 << DAC_CR_TSEL2_SHIFT)
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#define DAC_CR_TSEL2_T5 (0x3 << DAC_CR_TSEL2_SHIFT)
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#define DAC_CR_TSEL2_T15 (0x3 << DAC_CR_TSEL2_SHIFT)
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#define DAC_CR_TSEL2_T2 (0x4 << DAC_CR_TSEL2_SHIFT)
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#define DAC_CR_TSEL2_T4 (0x5 << DAC_CR_TSEL2_SHIFT)
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#define DAC_CR_TSEL2_E9 (0x6 << DAC_CR_TSEL2_SHIFT)
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#define DAC_CR_TSEL2_SW (0x7 << DAC_CR_TSEL2_SHIFT)
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/* TEN2: DAC channel2 trigger enable */
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#define DAC_CR_TEN2 (1 << 18)
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/* BOFF2: DAC channel2 output buffer disable */
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#define DAC_CR_BOFF2 (1 << 17)
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/* EN2: DAC channel2 enable */
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#define DAC_CR_EN2 (1 << 16)
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/* DMAUDRIE1: DAC channel1 DMA underrun interrupt enable */
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/* doesn't exist in most members of the stm32f1 family */
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#define DAC_CR_DMAUDRIE1 (1 << 13)
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/* DMAEN1: DAC channel1 DMA enable */
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#define DAC_CR_DMAEN1 (1 << 12)
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/* MAMP1[3:0]: DAC channel1 mask/amplitude selector */
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/* DAC_CR_MAMP1_n:
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* Unmask bits [(n-1)..0] of LFSR/Triangle Amplitude equal to (2**n)-1
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*/
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#define DAC_CR_MAMP1_SHIFT 8
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#define DAC_CR_MAMP1_1 (0x0 << DAC_CR_MAMP1_SHIFT)
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#define DAC_CR_MAMP1_2 (0x1 << DAC_CR_MAMP1_SHIFT)
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#define DAC_CR_MAMP1_3 (0x2 << DAC_CR_MAMP1_SHIFT)
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#define DAC_CR_MAMP1_4 (0x3 << DAC_CR_MAMP1_SHIFT)
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#define DAC_CR_MAMP1_5 (0x4 << DAC_CR_MAMP1_SHIFT)
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#define DAC_CR_MAMP1_6 (0x5 << DAC_CR_MAMP1_SHIFT)
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#define DAC_CR_MAMP1_7 (0x6 << DAC_CR_MAMP1_SHIFT)
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#define DAC_CR_MAMP1_8 (0x7 << DAC_CR_MAMP1_SHIFT)
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#define DAC_CR_MAMP1_9 (0x8 << DAC_CR_MAMP1_SHIFT)
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#define DAC_CR_MAMP1_10 (0x9 << DAC_CR_MAMP1_SHIFT)
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#define DAC_CR_MAMP1_11 (0xA << DAC_CR_MAMP1_SHIFT)
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#define DAC_CR_MAMP1_12 (0xB << DAC_CR_MAMP1_SHIFT)
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/* WAVE1[1:0]: DAC channel1 noise/triangle wave generation enable */
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/* Legend:
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* DIS: wave generation disabled
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* NOISE: Noise wave generation enabled
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* TRI: Triangle wave generation enabled
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*
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* Note: only used if bit TEN1 = 1 (DAC channel1 trigger enabled)
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*/
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#define DAC_CR_WAVE1_SHIFT 6
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#define DAC_CR_WAVE1_DIS (0x0 << DAC_CR_WAVE1_SHIFT)
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#define DAC_CR_WAVE1_NOISE (0x1 << DAC_CR_WAVE1_SHIFT)
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#define DAC_CR_WAVE1_TRI (0x2 << DAC_CR_WAVE1_SHIFT)
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/* TSEL1[2:0]: DAC channel1 trigger selection */
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/* Legend:
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*
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* T6: Timer 6 TRGO event
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* T3: Timer 3 TRGO event in connectivity line devices
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* T8: Timer 8 TRGO event in high-density and XL-density devices
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* T7: Timer 7 TRGO event
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* T5: Timer 5 TRGO event
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* T15: Timer 15 TRGO event
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* T2: Timer 2 TRGO event
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* T4: Timer 4 TRGO event
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* E9: External line9
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* SW: Software trigger
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*
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* Note: only used if bit TEN1 = 1 (DAC channel1 trigger enabled)
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* Note: T3 == T8; T5 == T15; not both present on one device
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* Note: this is *not* valid for the STM32L1 family
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*/
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#define DAC_CR_TSEL1_SHIFT 3
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#define DAC_CR_TSEL1_T6 (0x0 << DAC_CR_TSEL1_SHIFT)
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#define DAC_CR_TSEL1_T3 (0x1 << DAC_CR_TSEL1_SHIFT)
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#define DAC_CR_TSEL1_T8 (0x1 << DAC_CR_TSEL1_SHIFT)
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#define DAC_CR_TSEL1_T7 (0x2 << DAC_CR_TSEL1_SHIFT)
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#define DAC_CR_TSEL1_T5 (0x3 << DAC_CR_TSEL1_SHIFT)
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#define DAC_CR_TSEL1_T15 (0x3 << DAC_CR_TSEL1_SHIFT)
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#define DAC_CR_TSEL1_T2 (0x4 << DAC_CR_TSEL1_SHIFT)
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#define DAC_CR_TSEL1_T4 (0x5 << DAC_CR_TSEL1_SHIFT)
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#define DAC_CR_TSEL1_E9 (0x6 << DAC_CR_TSEL1_SHIFT)
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#define DAC_CR_TSEL1_SW (0x7 << DAC_CR_TSEL1_SHIFT)
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/* TEN1: DAC channel1 trigger enable */
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#define DAC_CR_TEN1 (1 << 2)
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/* BOFF1: DAC channel1 output buffer disable */
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#define DAC_CR_BOFF1 (1 << 1)
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/* EN1: DAC channel1 enable */
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#define DAC_CR_EN1 (1 << 0)
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/* --- DAC_SWTRIGR values -------------------------------------------------- */
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/* SWTRIG2: DAC channel2 software trigger */
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#define DAC_SWTRIGR_SWTRIG2 (1 << 1)
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/* SWTRIG1: DAC channel1 software trigger */
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#define DAC_SWTRIGR_SWTRIG1 (1 << 0)
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/* --- DAC_DHR12R1 values -------------------------------------------------- */
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#define DAC_DHR12R1_DACC1DHR_LSB (1 << 0)
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#define DAC_DHR12R1_DACC1DHR_MSK (0x0FFF << 0)
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/* --- DAC_DHR12L1 values -------------------------------------------------- */
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#define DAC_DHR12L1_DACC1DHR_LSB (1 << 4)
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#define DAC_DHR12L1_DACC1DHR_MSK (0x0FFF << 4)
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/* --- DAC_DHR8R1 values --------------------------------------------------- */
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#define DAC_DHR8R1_DACC1DHR_LSB (1 << 0)
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#define DAC_DHR8R1_DACC1DHR_MSK (0x00FF << 0)
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/* --- DAC_DHR12R2 values -------------------------------------------------- */
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#define DAC_DHR12R2_DACC2DHR_LSB (1 << 0)
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#define DAC_DHR12R2_DACC2DHR_MSK (0x00FFF << 0)
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/* --- DAC_DHR12L2 values -------------------------------------------------- */
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#define DAC_DHR12L2_DACC2DHR_LSB (1 << 4)
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#define DAC_DHR12L2_DACC2DHR_MSK (0x0FFF << 4)
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/* --- DAC_DHR8R2 values --------------------------------------------------- */
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#define DAC_DHR8R2_DACC2DHR_LSB (1 << 0)
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#define DAC_DHR8R2_DACC2DHR_MSK (0x00FF << 0)
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/* --- DAC_DHR12RD values -------------------------------------------------- */
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#define DAC_DHR12RD_DACC2DHR_LSB (1 << 16)
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#define DAC_DHR12RD_DACC2DHR_MSK (0x0FFF << 16)
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#define DAC_DHR12RD_DACC1DHR_LSB (1 << 0)
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#define DAC_DHR12RD_DACC1DHR_MSK (0x0FFF << 0)
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/* --- DAC_DHR12LD values -------------------------------------------------- */
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#define DAC_DHR12LD_DACC2DHR_LSB (1 << 16)
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#define DAC_DHR12LD_DACC2DHR_MSK (0x0FFF << 20)
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#define DAC_DHR12LD_DACC1DHR_LSB (1 << 0)
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#define DAC_DHR12LD_DACC1DHR_MSK (0x0FFF << 4)
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/* --- DAC_DHR8RD values --------------------------------------------------- */
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#define DAC_DHR8RD_DACC2DHR_LSB (1 << 8)
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#define DAC_DHR8RD_DACC2DHR_MSK (0x00FF << 8)
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#define DAC_DHR8RD_DACC1DHR_LSB (1 << 0)
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#define DAC_DHR8RD_DACC1DHR_MSK (0x00FF << 0)
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/* --- DAC_DOR1 values ----------------------------------------------------- */
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#define DAC_DOR1_DACC1DOR_LSB (1 << 0)
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#define DAC_DOR1_DACC1DOR_MSK (0x0FFF << 0)
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/* --- DAC_DOR2 values ----------------------------------------------------- */
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#define DAC_DOR2_DACC2DOR_LSB (1 << 0)
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#define DAC_DOR2_DACC2DOR_MSK (0x0FFF << 0)
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/* --- Function prototypes ------------------------------------------------- */
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/* TODO */
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#endif
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