| 0,0 → 1,66 |
|---|
| #include <16f887.h> |
| #fuses HS, NOWDT, NOPROTECT, BROWNOUT, PUT, NOLVP |
| #use delay(clock = 20000000) |
| #use rs232(baud=57600, xmit=PIN_C6, rcv=PIN_C7) |
| |
| #define CSN_SPI PIN_C2 |
| int8 address, uiTadc, data ; |
| |
| |
| // SPI mode definitions. |
| #define SPI_MODE_0 (SPI_L_TO_H | SPI_XMIT_L_TO_H) |
| #define SPI_MODE_1 (SPI_L_TO_H) |
| #define SPI_MODE_2 (SPI_H_TO_L) |
| #define SPI_MODE_3 (SPI_H_TO_L | SPI_XMIT_L_TO_H) |
| |
| |
| void main() |
| { |
| printf("Start\n\r"); |
| |
| setup_spi(SPI_MASTER | SPI_MODE_0 | SPI_CLK_DIV_64); |
| |
| output_high(CSN_SPI); |
| |
| delay_ms(100); |
| |
| while(true) |
| { |
| data = 5; //just to be sure that the value is updated |
| |
| //Start temperature and pressure conversion |
| address = 0x24; |
| address &= 0x7F; |
| |
| output_low(CSN_SPI); |
| delay_ms(1); |
| spi_write(address); |
| delay_ms(1); |
| spi_write(0x00); |
| delay_ms(1); |
| output_high(CSN_SPI); |
| delay_ms(2); |
| |
| |
| // get MSB for Pressure |
| address = 0x00; |
| address |= 0x80; |
| |
| output_low(CSN_SPI); |
| delay_ms(1); |
| spi_write(address); |
| delay_ms(1); |
| data = spi_read(0x00); |
| delay_ms(1); |
| output_high(CSN_SPI); |
| |
| printf("%u\n\r", data); |
| |
| //uiTadc = (unsigned int) data << 8; |
| //printf("%u\n\r", uiTadc); |
| |
| |
| delay_ms(100); |
| } |
| |
| } |