void spi_adns9500_read_reg_transmit(spi_package* package) {
/*copy address into fifo*/
SSPDR = (*package).data[0];
/*set bit mode (8bit or 16bit)*/
SSPCR0 = (*package).bit_mode | SSP_FRF | SSP_CPOL_ADNS | SSP_CPHA_ADNS | SSP_SCR;
/*select the device*/
(*package).slave_select();
/*enable spi and send fifo*/
SpiEnable();
/*wait until the address has been sent(Transmit fifo is emtpy)*/
while(SSPSR&(1<<BSY));
/*disable spi*/
SpiDisable();
/*wait for T_SRAD and let the sensor prepare data*/
delay_us(120);
/*generate clock for ADNS9500 -> MCU transmission*/
SSPDR = (*package).data[1];
/*enable spi and send fifo*/
SpiEnable();
/*wait until all data has been sent(Transmit fifo is emtpy)*/
while(SSPSR&(1<<BSY));
/*disable spi*/
SpiDisable();
/*unselect device*/
(*package).slave_unselect();
/*read out the dummy bytes or the data bytes*/
(*package).spi_interrupt_handler();
}
//
// Send a byte to the display, either as a command or data depending on the "cd" flag
//
void LcdSend(uint8_t cd, uint8_t data) {
LCD_CE_LOW; // Enable LCD ~CE
if (cd==0) LCD_DI_LOW; else LCD_DI_HIGH; // Command/Data-bit
TOGGLECLK;
SpiEnable(1);
SpiSend(data);
SpiDisable();
LCD_CE_HIGH; // Disable LCD ~CE
}
/* write 0x0A to 0x03 */
static void baro_scp_start_high_res_measurement(void)
{
uint8_t cmd = 0x03 << 2 | 0x02;
uint8_t data = 0x0A;
ScpSelect();
SSPDR = cmd;
SSPDR = data;
SpiEnableRti();
SpiEnable();
}
static inline void spi_transmit_single_package(spi_package* package){
spi_current_package = package;
/*copy data into fifo*/
for(int i=0; i<(*spi_current_package).length; i++){
SSPDR = (*spi_current_package).data[i];
}
/*set bit mode (8bit or 16bit)*/
SSPCR0 = (*spi_current_package).bit_mode | SSP_FRF | SSP_CPOL | SSP_CPHA | SSP_SCR;
/*select the device*/
(*spi_current_package).slave_select();
/* enable SPI and send package data*/
SpiClearRti();
SpiEnableRti();
SpiEnable();
}
/* read 0x21 (TEMP), 0x1F (MSB) and 0x20 (LSB) */
static void baro_scp_read(void)
{
uint8_t cmd0 = 0x21 << 2;
uint8_t cmd1 = 0x1F << 2;
uint8_t cmd2 = 0x20 << 2;
ScpSelect();
SSPDR = cmd0;
SSPDR = 0;
SSPDR = 0;
SSPDR = cmd1;
SSPDR = 0;
SSPDR = cmd2;
SSPDR = 0;
SSPDR = 0;
SpiEnable();
}
void spi_transmit(spi_package* package) {
/*copy data into fifo*/
for(int i=0; i<(*package).length; i++){
SSPDR = (*package).data[i];
}
/*set bit mode (8bit or 16bit)*/
SSPCR0 = (*package).bit_mode | SSP_FRF | SSP_CPOL | SSP_CPHA | SSP_SCR;
/*select the device*/
(*package).slave_select();
/*enable spi and send fifo*/
SpiEnable();
/*wait until all data has been sent(Transmit fifo is emtpy)*/
while(SSPSR&(1<<BSY));
/*unselect device*/
(*package).slave_unselect();
/*disable spi*/
SpiDisable();
/*read out the dummy bytes or the data bytes*/
(*package).spi_interrupt_handler();
}
void cc1101_t::Init() {
// ==== GPIO ====
PinSetupOut(GPIOA, CC_CS, omPushPull);
PinSetupAlterFuncOutput(GPIOA, CC_SCK, omPushPull);
PinSetupAlterFuncOutput(GPIOA, CC_MISO, omPushPull);
PinSetupAlterFuncOutput(GPIOA, CC_MOSI, omPushPull);
PinSetupIn(GPIOA, CC_GDO0, pudNone);
PinSetupIn(GPIOA, CC_GDO2, pudNone);
CsHi();
// ==== SPI ==== MSB first, master, ClkLowIdle, FirstEdge, Baudrate=f/2
SpiSetup(CC_SPI, boMSB, cpolIdleLow, cphaFirstEdge, sbFdiv2);
SpiEnable(CC_SPI);
// ==== Init CC ====
CReset();
FlushRxFIFO();
RfConfig();
chEvtInit(&IEvtSrcRx);
chEvtInit(&IEvtSrcTx);
State = ccIdle;
// ==== IRQ ====
RCC->APB2ENR |= RCC_APB2ENR_AFIOEN; // Enable AFIO clock
uint8_t tmp = CC_GDO0 / 4; // Indx of EXTICR register
uint8_t Shift = (CC_GDO0 & 0x03) * 4;
AFIO->EXTICR[tmp] &= ~((uint32_t)0b1111 << Shift); // Clear bits and leave clear to select GPIOA
tmp = 1<<CC_GDO0; // IRQ mask
// Configure EXTI line
EXTI->IMR |= tmp; // Interrupt mode enabled
EXTI->EMR &= ~tmp; // Event mode disabled
EXTI->RTSR &= ~tmp; // Rising trigger disabled
EXTI->FTSR |= tmp; // Falling trigger enabled
EXTI->PR = tmp; // Clean irq flag
nvicEnableVector(EXTI4_IRQn, CORTEX_PRIORITY_MASK(IRQ_PRIO_MEDIUM));
}
void micromag_read( void ) {
MmSelect();
SpiEnable();
// micromag_cur_axe = 0;
MmTriggerRead();
}