282 lines
6.4 KiB
C
282 lines
6.4 KiB
C
#include "includes.h"
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// DAC7311输出范围：0~4095对应0~2.5v，转成成0~25mA
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// 延迟大约10us
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void DAC7311_delay()
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{
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uint32_t loop = 250;
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while(loop--)
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__NOP();
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}
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// 通讯定义
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#define DAC7311_CHANNEL_1_LATCH_LOW() \
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{ \
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LL_GPIO_ResetOutputPin(GPIOC, LL_GPIO_PIN_8); \
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DAC7311_delay(); \
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}
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#define DAC7311_CHANNEL_1_LATCH_HIGH() \
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{ \
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LL_GPIO_SetOutputPin(GPIOC, LL_GPIO_PIN_8); \
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DAC7311_delay(); \
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}
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#define DAC7311_CHANNEL_2_LATCH_LOW() \
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{ \
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LL_GPIO_ResetOutputPin(GPIOC, LL_GPIO_PIN_7); \
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DAC7311_delay(); \
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}
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#define DAC7311_CHANNEL_2_LATCH_HIGH() \
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{ \
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LL_GPIO_SetOutputPin(GPIOC, LL_GPIO_PIN_7); \
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DAC7311_delay(); \
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}
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#define DAC7311_CHANNEL_3_LATCH_LOW() \
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{ \
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LL_GPIO_ResetOutputPin(GPIOC, LL_GPIO_PIN_9); \
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DAC7311_delay(); \
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}
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#define DAC7311_CHANNEL_3_LATCH_HIGH() \
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{ \
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LL_GPIO_SetOutputPin(GPIOC, LL_GPIO_PIN_9); \
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DAC7311_delay(); \
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}
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#define DAC7311_CLK_LOW() \
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{ \
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LL_GPIO_ResetOutputPin(GPIOC, LL_GPIO_PIN_6); \
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DAC7311_delay(); \
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}
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#define DAC7311_CLK_HIGH() \
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{ \
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LL_GPIO_SetOutputPin(GPIOC, LL_GPIO_PIN_6); \
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DAC7311_delay(); \
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}
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#define DAC7311_DATA_1() \
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{ \
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LL_GPIO_SetOutputPin(GPIOD, LL_GPIO_PIN_15); \
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DAC7311_delay(); \
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}
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#define DAC7311_DATA_0() \
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{ \
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LL_GPIO_ResetOutputPin(GPIOD, LL_GPIO_PIN_15); \
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DAC7311_delay(); \
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}
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// 写 1 bit
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void DAC7311_Bit(uint32_t b1)
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{
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DAC7311_CLK_HIGH();
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if(b1)
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{
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DAC7311_DATA_1();
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}
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else
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{
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DAC7311_DATA_0();
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}
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DAC7311_CLK_LOW();
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}
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// 写多个bits
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void DAC7311_Bits(uint32_t bytes, uint8_t num)
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{
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uint32_t mask = (1ul << (num - 1));
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while(num--)
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{
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DAC7311_Bit(bytes & mask);
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bytes <<= 1;
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}
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}
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void DAC7311_Write(uint8_t channel, uint32_t data)
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{
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if(channel == 0)
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{
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DAC7311_CHANNEL_1_LATCH_LOW();
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}
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else if(channel == 1)
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{
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DAC7311_CHANNEL_2_LATCH_LOW();
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}
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else
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{
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DAC7311_CHANNEL_3_LATCH_LOW();
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}
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DAC7311_Bits(data, 16);
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if(channel == 0)
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{
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DAC7311_CHANNEL_1_LATCH_HIGH();
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}
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else if(channel == 1)
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{
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DAC7311_CHANNEL_2_LATCH_HIGH();
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}
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else
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{
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DAC7311_CHANNEL_3_LATCH_HIGH();
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}
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DAC7311_CLK_HIGH();
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}
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// 初始化
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void DAC7311_Init()
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{
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LL_GPIO_InitTypeDef GPIO_InitStruct = {0};
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/* GPIO Ports Clock Enable */
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LL_AHB2_GRP1_EnableClock(LL_AHB2_GRP1_PERIPH_GPIOC);
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LL_AHB2_GRP1_EnableClock(LL_AHB2_GRP1_PERIPH_GPIOD);
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/**/
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LL_GPIO_SetOutputPin(GPIOC, LL_GPIO_PIN_7|LL_GPIO_PIN_8|LL_GPIO_PIN_9);
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/**/
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LL_GPIO_ResetOutputPin(GPIOD, LL_GPIO_PIN_15);
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/**/
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LL_GPIO_SetOutputPin(GPIOC, LL_GPIO_PIN_6);
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/**/
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GPIO_InitStruct.Pin = LL_GPIO_PIN_15;
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GPIO_InitStruct.Mode = LL_GPIO_MODE_OUTPUT;
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GPIO_InitStruct.Speed = LL_GPIO_SPEED_FREQ_LOW;
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GPIO_InitStruct.OutputType = LL_GPIO_OUTPUT_PUSHPULL;
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GPIO_InitStruct.Pull = LL_GPIO_PULL_NO;
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LL_GPIO_Init(GPIOD, &GPIO_InitStruct);
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/**/
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GPIO_InitStruct.Pin = LL_GPIO_PIN_6|LL_GPIO_PIN_7|LL_GPIO_PIN_8|LL_GPIO_PIN_9;
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GPIO_InitStruct.Mode = LL_GPIO_MODE_OUTPUT;
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GPIO_InitStruct.Speed = LL_GPIO_SPEED_FREQ_LOW;
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GPIO_InitStruct.OutputType = LL_GPIO_OUTPUT_PUSHPULL;
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GPIO_InitStruct.Pull = LL_GPIO_PULL_NO;
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LL_GPIO_Init(GPIOC, &GPIO_InitStruct);
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}
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void DAC7311_Open()
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{
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// 刷新电流输出
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DAC7311_Refresh();
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}
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// 输出正常电流, 将液位百分比转换为4~20mA电流
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void DAC7311_Out(uint8_t channel, float percent)
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{
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uint32_t dac = (percent * 0.16 + 4) / 25 * 4095 + 0.5;
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DAC7311_Write(channel, dac << 2);
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}
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// 输出报警电流：3.5mA
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void DAC7311_OutAlarm(uint8_t channel)
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{
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uint32_t dac = 3.5 / 25 * 4095 + 0.5;
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DAC7311_Write(channel, dac << 2);
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}
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// 输出零电流：0mA
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void DAC7311_OutZero(uint8_t channel)
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{
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uint32_t dac = 0;
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DAC7311_Write(channel, dac << 2);
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}
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// 刷新电流输出
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void DAC7311_Refresh()
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{
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uint8_t on = IS_VCC_MA_ON();
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VCC_MA_ON();
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#if 0
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DAC7311_OutAlarm(0); // 3.5mA
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DAC7311_Out(1, 0); // 4mA
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DAC7311_Out(2, 100); // 20mA
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#else
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if(dcBuff.sampleData.staDPress.notConnect)
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DAC7311_OutZero(0);
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else if(dcBuff.sampleData.staDPress.underFlow || dcBuff.sampleData.staDPress.overFlow)
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DAC7311_OutAlarm(0);
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else if(dcBuff.configDisplay.op_HARDWARE_VER_MAJOR == 229 // 巴西罐箱
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|| dcBuff.configDisplay.op_USE_CAPACITY_SENSOR // 电容测量
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|| dcBuff.configSensor.levelOutMMWC > 0) // 按最高液位的mmWC输出液位百分比
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{
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DAC7311_Out(0, dcBuff.sampleData.volumePct * 0.01); // volumePct放大了100倍的
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}
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else // 其它差压客户
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{
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// 差压传感器的量程
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DAC7311_Out(0, (dcBuff.sampleData.diff - dcBuff.configSensor.sensorDPress.lowRange) * 100.0
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/ (dcBuff.configSensor.sensorDPress.highRange - dcBuff.configSensor.sensorDPress.lowRange));
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}
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if(!dcBuff.configDisplay.op_2ND_420MA_OUT_LEVEL)
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{
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if(dcBuff.sampleData.staPress.notConnect)
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DAC7311_OutZero(1);
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else if(dcBuff.sampleData.staPress.underFlow || dcBuff.sampleData.staPress.overFlow)
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DAC7311_OutAlarm(1);
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else if(dcBuff.sampleData.staPress.full)
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DAC7311_Out(1, 100);
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else
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{
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// 压力传感器的量程
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DAC7311_Out(1, (dcBuff.sampleData.pressure - dcBuff.configSensor.sensorPress.lowRange) * 100.0
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/ (dcBuff.configSensor.sensorPress.highRange - dcBuff.configSensor.sensorPress.lowRange));
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}
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}
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else
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{
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if(dcBuff.sampleData.staDPress.notConnect)
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DAC7311_OutZero(1);
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else if(dcBuff.sampleData.staDPress.underFlow || dcBuff.sampleData.staDPress.overFlow)
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DAC7311_OutAlarm(1);
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else if(dcBuff.configDisplay.op_HARDWARE_VER_MAJOR == 229 // 巴西罐箱
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|| dcBuff.configDisplay.op_USE_CAPACITY_SENSOR // 电容测量
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|| dcBuff.configSensor.levelOutMMWC > 0) // 按最高液位的mmWC输出液位百分比
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{
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DAC7311_Out(1, dcBuff.sampleData.volumePct * 0.01); // volumePct放大了100倍的
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}
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else // 其它差压客户
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{
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// 差压传感器的量程
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DAC7311_Out(1, (dcBuff.sampleData.diff - dcBuff.configSensor.sensorDPress.lowRange) * 100.0
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/ (dcBuff.configSensor.sensorDPress.highRange - dcBuff.configSensor.sensorDPress.lowRange));
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}
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}
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if(dcBuff.sampleData.staExtTempr[0].notConnect)
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DAC7311_OutZero(2);
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else if(dcBuff.sampleData.staExtTempr[0].underFlow || dcBuff.sampleData.staExtTempr[0].overFlow)
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DAC7311_OutAlarm(2);
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else if(dcBuff.sampleData.staExtTempr[0].full)
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DAC7311_Out(2, 100);
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else if(dcBuff.configDisplay.op_USE_PT100_SENSOR)
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{
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// PT100温度传感器的量程: -200~80
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DAC7311_Out(2, (dcBuff.sampleData.extTempr[0] - (-200)) * 100.0
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/ (80 - (-200)));
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}
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else
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{
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// 4~20mA温度传感器的量程
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DAC7311_Out(2, (dcBuff.sampleData.extTempr[0] - dcBuff.configSensor.sensorMTempr[0].lowRange) * 100.0
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/ (dcBuff.configSensor.sensorMTempr[0].highRange - dcBuff.configSensor.sensorMTempr[0].lowRange));
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}
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#endif
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if(!on)
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VCC_MA_OFF();
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}
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