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Line 16... |
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#define SPI_MODE_0 (SPI_L_TO_H | SPI_XMIT_L_TO_H) |
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#define SPI_MODE_0 (SPI_L_TO_H | SPI_XMIT_L_TO_H) |
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#define SPI_MODE_1 (SPI_L_TO_H) |
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#define SPI_MODE_1 (SPI_L_TO_H) |
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#define SPI_MODE_2 (SPI_H_TO_L) |
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#define SPI_MODE_2 (SPI_H_TO_L) |
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#define SPI_MODE_3 (SPI_H_TO_L | SPI_XMIT_L_TO_H) |
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#define SPI_MODE_3 (SPI_H_TO_L | SPI_XMIT_L_TO_H) |
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|
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|
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unsigned int16 a0; |
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signed int16 a0; |
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unsigned int16 b1; |
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signed int16 b1; |
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unsigned int16 b2; |
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signed int16 b2; |
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unsigned int16 c12; |
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signed int16 c12; |
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|
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|
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|
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|
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int MPL_init() |
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int MPL_init() |
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{ |
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{ |
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unsigned int8 a0_MSB, a0_LSB; |
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unsigned int8 a0_MSB, a0_LSB; |
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c12 = ((int16) c12_MSB << 8) + c12_LSB; |
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c12 = ((int16) c12_MSB << 8) + c12_LSB; |
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} |
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} |
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|
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|
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float MPL_get_pressure() |
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float MPL_get_pressure() |
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{ |
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{ |
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int8 LSB_data, MSB_data; |
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unsigned int8 LSB_data, MSB_data; |
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int16 ADC_pressure, ADC_temperature; |
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unsigned int16 ADC_pressure, ADC_temperature; |
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|
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|
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output_low(CSN_SPI); //Start temperature and pressure conversion |
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output_low(CSN_SPI); //Start temperature and pressure conversion |
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spi_write(0x24); |
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spi_write(0x24); |
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spi_write(0x00); |
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spi_write(0x00); |
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output_high(CSN_SPI); |
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output_high(CSN_SPI); |
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|
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|
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delay_ms(3); |
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delay_ms(10); |
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|
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|
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output_low(CSN_SPI); // get MSB for Pressure |
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output_low(CSN_SPI); // get MSB for Pressure |
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spi_write(0x80); |
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spi_write(0x80); |
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LSB_data = spi_read(0x00); |
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LSB_data = spi_read(0x00); |
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spi_write(0x82); // get LSB for Pressure |
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spi_write(0x82); // get LSB for Pressure |
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MSB_data = spi_read(0x00); |
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MSB_data = spi_read(0x00); |
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|
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output_high(CSN_SPI); |
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|
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|
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|
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printf("%lX %lX\r\n", MSB_data, LSB_data); |
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ADC_pressure = ((int16) MSB_data << 8) + LSB_data; // conversion of 8bit registers to 16bit variable |
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ADC_pressure = ((int16) MSB_data << 8) + LSB_data; // conversion of 8bit registers to 16bit variable |
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|
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|
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|
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output_low(CSN_SPI); |
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spi_write(0x84); |
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spi_write(0x84); |
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LSB_data = spi_read(0x00); |
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LSB_data = spi_read(0x00); |
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spi_write(0x86); // get LSB for Temperature |
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spi_write(0x86); // get LSB for Temperature |
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MSB_data = spi_read(0x00); |
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MSB_data = spi_read(0x00); |
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spi_read(0x00); |
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spi_read(0x00); |
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output_high(CSN_SPI); |
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output_high(CSN_SPI); |
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|
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|
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|
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printf("%lX %lX\r\n", MSB_data, LSB_data); |
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ADC_temperature = ((int16) MSB_data << 8) + LSB_data; // conversion of 8bit registers to 16bit variable |
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ADC_temperature = ((int16) MSB_data << 8) + LSB_data; // conversion of 8bit registers to 16bit variable |
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|
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|
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// printf("%lX %lX\r\n", ADC_pressure, ADC_temperature); |
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printf("%lX %lX\r\n", ADC_pressure, ADC_temperature); |
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|
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|
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return (a0 + (b1 + c12 * ADC_temperature) * ADC_pressure + b2 * ADC_temperature ); |
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return (a0 + (b1 + c12 * ADC_temperature) * ADC_pressure + b2 * ADC_temperature ); |
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} |
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} |
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|
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|
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void main() |
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void main() |
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Line 109... |
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|
109 |
|
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MPL_init(); |
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MPL_init(); |
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|
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|
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while(true) |
112 |
while(true) |
109 |
{ |
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{ |
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|
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// MPL_init(); |
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printf("%f \r\n", MPL_get_pressure()); |
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// printf("%f \r\n", MPL_get_pressure()); |
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|
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// printf("%ld %ld %ld %ld \r\n",a0, b1, b2, c12); |
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|
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MPL_get_pressure(); |
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|
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|
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delay_ms(100); |
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delay_ms(500); |
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} |
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} |
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} |
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} |