Mouse code for the MacroRat
mbed-dev/targets/TARGET_NUVOTON/TARGET_M451/device/StdDriver/m451_dac.c@18:6a4db94011d3, 2017-05-14 (annotated)
- Committer:
- sahilmgandhi
- Date:
- Sun May 14 23:18:57 2017 +0000
- Revision:
- 18:6a4db94011d3
Publishing again
Who changed what in which revision?
User | Revision | Line number | New contents of line |
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sahilmgandhi | 18:6a4db94011d3 | 1 | /**************************************************************************//** |
sahilmgandhi | 18:6a4db94011d3 | 2 | * @file dac.c |
sahilmgandhi | 18:6a4db94011d3 | 3 | * @version V2.00 |
sahilmgandhi | 18:6a4db94011d3 | 4 | * $Revision: 8 $ |
sahilmgandhi | 18:6a4db94011d3 | 5 | * $Date: 15/08/11 10:26a $ |
sahilmgandhi | 18:6a4db94011d3 | 6 | * @brief M451 series DAC driver source file |
sahilmgandhi | 18:6a4db94011d3 | 7 | * |
sahilmgandhi | 18:6a4db94011d3 | 8 | * @note |
sahilmgandhi | 18:6a4db94011d3 | 9 | * Copyright (C) 2014~2015 Nuvoton Technology Corp. All rights reserved. |
sahilmgandhi | 18:6a4db94011d3 | 10 | *****************************************************************************/ |
sahilmgandhi | 18:6a4db94011d3 | 11 | #include "M451Series.h" |
sahilmgandhi | 18:6a4db94011d3 | 12 | |
sahilmgandhi | 18:6a4db94011d3 | 13 | /** @addtogroup Standard_Driver Standard Driver |
sahilmgandhi | 18:6a4db94011d3 | 14 | @{ |
sahilmgandhi | 18:6a4db94011d3 | 15 | */ |
sahilmgandhi | 18:6a4db94011d3 | 16 | |
sahilmgandhi | 18:6a4db94011d3 | 17 | /** @addtogroup DAC_Driver DAC Driver |
sahilmgandhi | 18:6a4db94011d3 | 18 | @{ |
sahilmgandhi | 18:6a4db94011d3 | 19 | */ |
sahilmgandhi | 18:6a4db94011d3 | 20 | |
sahilmgandhi | 18:6a4db94011d3 | 21 | /** @addtogroup DAC_EXPORTED_FUNCTIONS DAC Exported Functions |
sahilmgandhi | 18:6a4db94011d3 | 22 | @{ |
sahilmgandhi | 18:6a4db94011d3 | 23 | */ |
sahilmgandhi | 18:6a4db94011d3 | 24 | |
sahilmgandhi | 18:6a4db94011d3 | 25 | /** |
sahilmgandhi | 18:6a4db94011d3 | 26 | * @brief This function make DAC module be ready to convert. |
sahilmgandhi | 18:6a4db94011d3 | 27 | * @param[in] dac Base address of DAC module. |
sahilmgandhi | 18:6a4db94011d3 | 28 | * @param[in] u32Ch Not used in M451 Series DAC. |
sahilmgandhi | 18:6a4db94011d3 | 29 | * @param[in] u32TrgSrc Decides the trigger source. Valid values are: |
sahilmgandhi | 18:6a4db94011d3 | 30 | * - \ref DAC_WRITE_DAT_TRIGGER :Write DAC_DAT trigger |
sahilmgandhi | 18:6a4db94011d3 | 31 | * - \ref DAC_SOFTWARE_TRIGGER :Software trigger |
sahilmgandhi | 18:6a4db94011d3 | 32 | * - \ref DAC_LOW_LEVEL_TRIGGER :STDAC pin low level trigger |
sahilmgandhi | 18:6a4db94011d3 | 33 | * - \ref DAC_HIGH_LEVEL_TRIGGER :STDAC pin high level trigger |
sahilmgandhi | 18:6a4db94011d3 | 34 | * - \ref DAC_FALLING_EDGE_TRIGGER :STDAC pin falling edge trigger |
sahilmgandhi | 18:6a4db94011d3 | 35 | * - \ref DAC_RISING_EDGE_TRIGGER :STDAC pin rising edge trigger |
sahilmgandhi | 18:6a4db94011d3 | 36 | * - \ref DAC_TIMER0_TRIGGER :Timer 0 trigger |
sahilmgandhi | 18:6a4db94011d3 | 37 | * - \ref DAC_TIMER1_TRIGGER :Timer 1 trigger |
sahilmgandhi | 18:6a4db94011d3 | 38 | * - \ref DAC_TIMER2_TRIGGER :Timer 2 trigger |
sahilmgandhi | 18:6a4db94011d3 | 39 | * - \ref DAC_TIMER3_TRIGGER :Timer 3 trigger |
sahilmgandhi | 18:6a4db94011d3 | 40 | * - \ref DAC_PWM0_TRIGGER :PWM0 trigger |
sahilmgandhi | 18:6a4db94011d3 | 41 | * - \ref DAC_PWM1_TRIGGER :PWM1 trigger |
sahilmgandhi | 18:6a4db94011d3 | 42 | * @return None |
sahilmgandhi | 18:6a4db94011d3 | 43 | * @details The DAC conversion can be started by writing DAC_DAT, software trigger or hardware trigger. |
sahilmgandhi | 18:6a4db94011d3 | 44 | * When TRGEN (DAC_CTL[4]) is 0, the data conversion is started by writing DAC_DAT register. |
sahilmgandhi | 18:6a4db94011d3 | 45 | * When TRGEN (DAC_CTL[4]) is 1, the data conversion is started by SWTRG (DAC_SWTRG[0]) is set to 1, |
sahilmgandhi | 18:6a4db94011d3 | 46 | * external STDAC pin, timer event, or PWM timer event. |
sahilmgandhi | 18:6a4db94011d3 | 47 | */ |
sahilmgandhi | 18:6a4db94011d3 | 48 | void DAC_Open(DAC_T *dac, |
sahilmgandhi | 18:6a4db94011d3 | 49 | uint32_t u32Ch, |
sahilmgandhi | 18:6a4db94011d3 | 50 | uint32_t u32TrgSrc) |
sahilmgandhi | 18:6a4db94011d3 | 51 | { |
sahilmgandhi | 18:6a4db94011d3 | 52 | dac->CTL &= ~(DAC_CTL_ETRGSEL_Msk | DAC_CTL_TRGSEL_Msk | DAC_CTL_TRGEN_Msk); |
sahilmgandhi | 18:6a4db94011d3 | 53 | |
sahilmgandhi | 18:6a4db94011d3 | 54 | dac->CTL |= (u32TrgSrc | DAC_CTL_DACEN_Msk); |
sahilmgandhi | 18:6a4db94011d3 | 55 | } |
sahilmgandhi | 18:6a4db94011d3 | 56 | |
sahilmgandhi | 18:6a4db94011d3 | 57 | /** |
sahilmgandhi | 18:6a4db94011d3 | 58 | * @brief Disable DAC analog power. |
sahilmgandhi | 18:6a4db94011d3 | 59 | * @param[in] dac Base address of DAC module. |
sahilmgandhi | 18:6a4db94011d3 | 60 | * @param[in] u32Ch Not used in M451 Series DAC. |
sahilmgandhi | 18:6a4db94011d3 | 61 | * @return None |
sahilmgandhi | 18:6a4db94011d3 | 62 | * @details Disable DAC analog power for saving power consumption. |
sahilmgandhi | 18:6a4db94011d3 | 63 | */ |
sahilmgandhi | 18:6a4db94011d3 | 64 | void DAC_Close(DAC_T *dac, uint32_t u32Ch) |
sahilmgandhi | 18:6a4db94011d3 | 65 | { |
sahilmgandhi | 18:6a4db94011d3 | 66 | dac->CTL &= (~DAC_CTL_DACEN_Msk); |
sahilmgandhi | 18:6a4db94011d3 | 67 | } |
sahilmgandhi | 18:6a4db94011d3 | 68 | |
sahilmgandhi | 18:6a4db94011d3 | 69 | /** |
sahilmgandhi | 18:6a4db94011d3 | 70 | * @brief Set delay time for DAC to become stable. |
sahilmgandhi | 18:6a4db94011d3 | 71 | * @param[in] dac Base address of DAC module. |
sahilmgandhi | 18:6a4db94011d3 | 72 | * @param[in] u32Delay Decides the DAC conversion settling time, the range is from 0~(1023/PCLK*1000000) micro seconds. |
sahilmgandhi | 18:6a4db94011d3 | 73 | * @return Real DAC conversion settling time (micro second). |
sahilmgandhi | 18:6a4db94011d3 | 74 | * @details For example, DAC controller clock speed is 72MHz and DAC conversion setting time is 1 us, SETTLET (DAC_TCTL[9:0]) value must be greater than 0x48. |
sahilmgandhi | 18:6a4db94011d3 | 75 | * @note User needs to write appropriate value to meet DAC conversion settling time base on PCLK (APB clock) speed. |
sahilmgandhi | 18:6a4db94011d3 | 76 | */ |
sahilmgandhi | 18:6a4db94011d3 | 77 | float DAC_SetDelayTime(DAC_T *dac, uint32_t u32Delay) |
sahilmgandhi | 18:6a4db94011d3 | 78 | { |
sahilmgandhi | 18:6a4db94011d3 | 79 | SystemCoreClockUpdate(); |
sahilmgandhi | 18:6a4db94011d3 | 80 | |
sahilmgandhi | 18:6a4db94011d3 | 81 | dac->TCTL = ((SystemCoreClock * u32Delay / 1000000) & 0x3FF); |
sahilmgandhi | 18:6a4db94011d3 | 82 | |
sahilmgandhi | 18:6a4db94011d3 | 83 | return ((dac->TCTL) * 1000000 / SystemCoreClock); |
sahilmgandhi | 18:6a4db94011d3 | 84 | } |
sahilmgandhi | 18:6a4db94011d3 | 85 | |
sahilmgandhi | 18:6a4db94011d3 | 86 | |
sahilmgandhi | 18:6a4db94011d3 | 87 | |
sahilmgandhi | 18:6a4db94011d3 | 88 | /*@}*/ /* end of group DAC_EXPORTED_FUNCTIONS */ |
sahilmgandhi | 18:6a4db94011d3 | 89 | |
sahilmgandhi | 18:6a4db94011d3 | 90 | /*@}*/ /* end of group DAC_Driver */ |
sahilmgandhi | 18:6a4db94011d3 | 91 | |
sahilmgandhi | 18:6a4db94011d3 | 92 | /*@}*/ /* end of group Standard_Driver */ |
sahilmgandhi | 18:6a4db94011d3 | 93 | |
sahilmgandhi | 18:6a4db94011d3 | 94 | /*** (C) COPYRIGHT 2014~2015 Nuvoton Technology Corp. ***/ |