mirror of
https://github.com/FreeRTOS/FreeRTOS-Kernel.git
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372 lines
12 KiB
C
372 lines
12 KiB
C
/* --COPYRIGHT--,BSD
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* Copyright (c) 2014, Texas Instruments Incorporated
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* * Neither the name of Texas Instruments Incorporated nor the names of
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* its contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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* --/COPYRIGHT--*/
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//*****************************************************************************
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//
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// lcd_c.c - Driver for the lcd_c Module.
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//
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//*****************************************************************************
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//*****************************************************************************
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//
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//! \addtogroup lcd_c_api lcd_c
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//! @{
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//
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//*****************************************************************************
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#include "inc/hw_regaccess.h"
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#include "inc/hw_memmap.h"
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#ifdef __MSP430_HAS_LCD_C__
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#include "lcd_c.h"
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#include <assert.h>
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//*****************************************************************************
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//
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// Initialization parameter instance
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//
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//*****************************************************************************
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const LCD_C_initParam LCD_C_INIT_PARAM = {
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LCD_C_CLOCKSOURCE_ACLK,
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LCD_C_CLOCKDIVIDER_1,
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LCD_C_CLOCKPRESCALAR_1,
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LCD_C_STATIC,
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LCD_C_STANDARD_WAVEFORMS,
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LCD_C_SEGMENTS_DISABLED
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};
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static void setLCDFunction(uint16_t baseAddress,
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uint8_t index,
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uint16_t value)
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{
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switch(index)
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{
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case 0:
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HWREG16(baseAddress + OFS_LCDCPCTL0) |= value;
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break;
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case 1:
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HWREG16(baseAddress + OFS_LCDCPCTL1) |= value;
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break;
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case 2:
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HWREG16(baseAddress + OFS_LCDCPCTL2) |= value;
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break;
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case 3:
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HWREG16(baseAddress + OFS_LCDCPCTL3) |= value;
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break;
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default: break;
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}
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}
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void LCD_C_init(uint16_t baseAddress,
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LCD_C_initParam *initParams)
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{
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HWREG16(baseAddress + OFS_LCDCCTL0) &= ~LCDON;
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HWREG16(baseAddress + OFS_LCDCCTL0) &= ~(LCDMX0 | LCDMX1 | LCDMX2 | LCDSSEL
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| LCDLP | LCDSON | LCDDIV_31);
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HWREG16(baseAddress + OFS_LCDCCTL0) |= initParams->muxRate;
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HWREG16(baseAddress + OFS_LCDCCTL0) |= initParams->clockSource;
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HWREG16(baseAddress + OFS_LCDCCTL0) |= initParams->waveforms;
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HWREG16(baseAddress + OFS_LCDCCTL0) |= initParams->segments;
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HWREG16(baseAddress + OFS_LCDCCTL0) |= initParams->clockDivider;
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HWREG16(baseAddress + OFS_LCDCCTL0) |= initParams->clockPrescalar;
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}
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void LCD_C_on(uint16_t baseAddress)
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{
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HWREG16(baseAddress + OFS_LCDCCTL0) |= LCDON;
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}
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void LCD_C_off(uint16_t baseAddress)
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{
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HWREG16(baseAddress + OFS_LCDCCTL0) &= ~LCDON;
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}
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void LCD_C_clearInterrupt(uint16_t baseAddress,
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uint16_t mask)
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{
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HWREG8(baseAddress + OFS_LCDCCTL1_L) &= ~(mask >> 8);
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}
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uint16_t LCD_C_getInterruptStatus(uint16_t baseAddress,
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uint16_t mask)
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{
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return (HWREG8(baseAddress + OFS_LCDCCTL1_L) & (mask >> 8));
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}
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void LCD_C_enableInterrupt(uint16_t baseAddress,
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uint16_t mask)
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{
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HWREG16(baseAddress + OFS_LCDCCTL1) |= mask;
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}
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void LCD_C_disableInterrupt(uint16_t baseAddress,
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uint16_t mask)
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{
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HWREG16(baseAddress + OFS_LCDCCTL1) &= ~mask;
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}
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void LCD_C_clearMemory(uint16_t baseAddress)
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{
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HWREG16(baseAddress + OFS_LCDCMEMCTL) |= LCDCLRM;
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}
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void LCD_C_clearBlinkingMemory(uint16_t baseAddress)
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{
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HWREG16(baseAddress + OFS_LCDCMEMCTL) |= LCDCLRBM;
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}
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void LCD_C_selectDisplayMemory(uint16_t baseAddress,
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uint16_t displayMemory)
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{
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HWREG16(baseAddress + OFS_LCDCMEMCTL) &= ~LCDDISP;
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HWREG16(baseAddress + OFS_LCDCMEMCTL) |= displayMemory;
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}
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void LCD_C_setBlinkingControl(uint16_t baseAddress,
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uint8_t clockDivider,
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uint8_t clockPrescalar,
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uint8_t mode)
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{
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HWREG16(baseAddress +
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OFS_LCDCBLKCTL) &= ~(LCDBLKDIV0 | LCDBLKDIV1 | LCDBLKDIV2 |
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LCDBLKPRE0 | LCDBLKPRE1 |
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LCDBLKPRE2 |
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LCDBLKMOD0 | LCDBLKMOD1
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);
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HWREG16(baseAddress +
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OFS_LCDCBLKCTL) |= clockDivider | clockPrescalar | mode;
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}
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void LCD_C_enableChargePump(uint16_t baseAddress)
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{
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HWREG16(baseAddress + OFS_LCDCCTL0) &= ~LCDON;
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HWREG16(baseAddress + OFS_LCDCVCTL) |= LCDCPEN;
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}
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void LCD_C_disableChargePump(uint16_t baseAddress)
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{
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HWREG16(baseAddress + OFS_LCDCCTL0) &= ~LCDON;
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HWREG16(baseAddress + OFS_LCDCVCTL) &= ~LCDCPEN;
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}
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void LCD_C_selectBias(uint16_t baseAddress,
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uint16_t bias)
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{
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HWREG16(baseAddress + OFS_LCDCCTL0) &= ~LCDON;
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HWREG16(baseAddress + OFS_LCDCVCTL) &= ~LCD2B;
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HWREG16(baseAddress + OFS_LCDCVCTL) |= bias;
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}
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void LCD_C_selectChargePumpReference(uint16_t baseAddress,
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uint16_t reference)
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{
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HWREG16(baseAddress + OFS_LCDCCTL0) &= ~LCDON;
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HWREG16(baseAddress + OFS_LCDCVCTL) &= ~VLCDREF_3;
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HWREG16(baseAddress + OFS_LCDCVCTL) |= reference;
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}
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void LCD_C_setVLCDSource(uint16_t baseAddress,
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uint16_t vlcdSource,
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uint16_t v2v3v4Source,
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uint16_t v5Source)
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{
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HWREG16(baseAddress + OFS_LCDCCTL0) &= ~LCDON;
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HWREG16(baseAddress + OFS_LCDCVCTL) &= ~VLCDEXT;
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HWREG16(baseAddress + OFS_LCDCVCTL) &= ~LCDREXT;
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HWREG16(baseAddress + OFS_LCDCVCTL) &= ~LCDEXTBIAS;
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HWREG16(baseAddress + OFS_LCDCVCTL) &= ~R03EXT;
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HWREG16(baseAddress + OFS_LCDCVCTL) |= vlcdSource;
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HWREG16(baseAddress + OFS_LCDCVCTL) |= v2v3v4Source;
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HWREG16(baseAddress + OFS_LCDCVCTL) |= v5Source;
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}
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void LCD_C_setVLCDVoltage(uint16_t baseAddress,
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uint16_t voltage)
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{
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HWREG16(baseAddress + OFS_LCDCCTL0) &= ~LCDON;
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HWREG16(baseAddress + OFS_LCDCVCTL) &= ~VLCD_15;
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HWREG16(baseAddress + OFS_LCDCVCTL) |= voltage;
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}
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void LCD_C_setPinAsLCDFunction(uint16_t baseAddress,
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uint8_t pin)
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{
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HWREG16(baseAddress + OFS_LCDCCTL0) &= ~LCDON;
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uint8_t idx = pin >> 4;
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uint16_t val = 1 << (pin & 0xF);
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setLCDFunction(baseAddress, idx, val);
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}
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void LCD_C_setPinAsPortFunction(uint16_t baseAddress,
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uint8_t pin)
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{
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HWREG16(baseAddress + OFS_LCDCCTL0) &= ~LCDON;
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uint8_t idx = pin >> 4;
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uint16_t val = 1 << (pin & 0xF);
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switch(idx)
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{
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case 0:
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HWREG16(baseAddress + OFS_LCDCPCTL0) &= ~val;
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break;
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case 1:
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HWREG16(baseAddress + OFS_LCDCPCTL1) &= ~val;
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break;
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case 2:
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HWREG16(baseAddress + OFS_LCDCPCTL2) &= ~val;
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break;
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case 3:
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HWREG16(baseAddress + OFS_LCDCPCTL3) &= ~val;
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break;
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default: break;
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}
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}
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void LCD_C_setPinAsLCDFunctionEx(uint16_t baseAddress,
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uint8_t startPin,
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uint8_t endPin)
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{
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uint8_t startIdx = startPin >> 4;
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uint8_t endIdx = endPin >> 4;
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uint8_t startPos = startPin & 0xF;
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uint8_t endPos = endPin & 0xF;
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uint16_t val = 0;
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uint8_t i = 0;
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HWREG16(baseAddress + OFS_LCDCCTL0) &= ~LCDON;
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if(startIdx == endIdx)
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{
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val = (0xFFFF >> (15 - endPos)) & (0xFFFF << startPos);
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setLCDFunction(baseAddress, startIdx, val);
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}
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else
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{
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val = 0xFFFF >> (15 - endPos);
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setLCDFunction(baseAddress, endIdx, val);
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for(i = endIdx - 1; i > startIdx; i--)
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{
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setLCDFunction(baseAddress, i, 0xFFFF);
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}
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val = 0xFFFF << startPos;
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setLCDFunction(baseAddress, startIdx, val);
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}
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}
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void LCD_C_setMemory(uint16_t baseAddress,
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uint8_t pin,
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uint8_t value)
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{
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uint8_t muxRate = HWREG16(baseAddress + OFS_LCDCCTL0)
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& (LCDMX2 | LCDMX1 | LCDMX0);
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// static, 2-mux, 3-mux, 4-mux
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if(muxRate <= (LCDMX1 | LCDMX0))
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{
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if(pin & 1)
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{
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HWREG8(baseAddress + OFS_LCDM1 + pin / 2) &= 0x0F;
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HWREG8(baseAddress + OFS_LCDM1 + pin / 2) |= (value & 0xF) << 4;
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}
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else
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{
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HWREG8(baseAddress + OFS_LCDM1 + pin / 2) &= 0xF0;
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HWREG8(baseAddress + OFS_LCDM1 + pin / 2) |= (value & 0xF);
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}
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}
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else
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{
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//5-mux, 6-mux, 7-mux, 8-mux
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HWREG8(baseAddress + OFS_LCDM1 + pin) = value;
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}
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}
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void LCD_C_setBlinkingMemory(uint16_t baseAddress,
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uint8_t pin,
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uint8_t value)
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{
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uint8_t muxRate = HWREG16(baseAddress + OFS_LCDCCTL0)
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& (LCDMX2 | LCDMX1 | LCDMX0);
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// static, 2-mux, 3-mux, 4-mux
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if(muxRate <= (LCDMX1 | LCDMX0))
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{
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if(pin & 1)
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{
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HWREG8(baseAddress + OFS_LCDBM1 + pin / 2) &= 0x0F;
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HWREG8(baseAddress + OFS_LCDBM1 + pin / 2) |= (value & 0xF) << 4;
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}
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else
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{
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HWREG8(baseAddress + OFS_LCDBM1 + pin / 2) &= 0xF0;
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HWREG8(baseAddress + OFS_LCDBM1 + pin / 2) |= (value & 0xF);
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}
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}
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else
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{
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//5-mux, 6-mux, 7-mux, 8-mux
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HWREG8(baseAddress + OFS_LCDBM1 + pin) = value;
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}
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}
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void LCD_C_configChargePump(uint16_t baseAddress,
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uint16_t syncToClock,
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uint16_t functionControl)
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{
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HWREG16(baseAddress + OFS_LCDCCPCTL) &= ~(LCDCPCLKSYNC);
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HWREG16(baseAddress + OFS_LCDCCPCTL) &= ~(LCDCPDIS7 | LCDCPDIS6 | LCDCPDIS5
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| LCDCPDIS4 | LCDCPDIS3 |
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LCDCPDIS2 | LCDCPDIS1 |
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LCDCPDIS0);
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HWREG16(baseAddress + OFS_LCDCCPCTL) |= syncToClock | functionControl;
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}
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#endif
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//*****************************************************************************
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//
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//! Close the doxygen group for lcd_c_api
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//! @}
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//
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//*****************************************************************************
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