/**
****************************************************************************************
* @brief Checks if system is in startup phase.
* @return uint8 1 if system is in startup phase, otherwise 0.
****************************************************************************************
*/
uint8_t check_sys_startup_period(void)
{
uint8_t ret_value = 0;
if (sys_startup_flag)
{
uint32_t current_time;
current_time = lld_evt_time_get();
if (current_time < startup_sleep_delay) // startup_sleep_delay after system startup to allow system to sleep
ret_value = 1;
else // After 2 seconds system can sleep
{
sys_startup_flag = false;
if ( (app_get_sleep_mode() == 2) || (app_get_sleep_mode() == 1) )
{
SetWord16(SET_FREEZE_REG, FRZ_WDOG); // Stop WDOG until debugger is removed
while ((GetWord16(SYS_STAT_REG) & DBG_IS_UP) == DBG_IS_UP) {};
SetBits16(SYS_CTRL_REG, DEBUGGER_ENABLE, 0); // close debugger
}
#if (USE_WDOG)
SetWord16(RESET_FREEZE_REG, FRZ_WDOG); // Start WDOG
#endif
ret_value = 0;
}
}
return ret_value;
}
/**
****************************************************************************************
* @brief Read from 3-wire SPI
* @param[in] registerIndex: Target address (A6..A0)
*
* @return byte read
****************************************************************************************
*/
uint8_t read_from_3wire_SPI_register(uint8_t registerIndex, uint8_t is_last_transaction)
{
static uint8_t i, dataRead;
GPIO_SetInactive(cs.port, cs.pin); // pull CS low
GPIO_SetPinFunction( sdio.port, sdio.pin, OUTPUT, PID_SPI_DO); // configure SDIO as output
SetWord16(SPI_RX_TX_REG0, (uint16_t)(registerIndex) ); // MSB set to HIGH - A6..A0 Address of register to write to
do {
} while (GetBits16(SPI_CTRL_REG,SPI_INT_BIT)==0); // polling to wait for spi transmission
SetWord16(SPI_CLEAR_INT_REG, 0); //Clear SPI_CTRL_REG[SPI_INT_BIT] interrupt
GPIO_SetPinFunction( sdio.port, sdio.pin, INPUT, PID_SPI_DI); // configure SDIO as input
for (i=0; i<TsradCounter; i++); // {DEV.NOTE#: For Mouse sensor Delay > Tsrad = 4us <-- suitable counter is 6}
SetWord16(SPI_RX_TX_REG0, (uint16_t)0x00 ); // dummy write data - read data
do {
} while (GetBits16(SPI_CTRL_REG,SPI_INT_BIT)==0); // polling to wait for spi transmission
SetWord16(SPI_CLEAR_INT_REG, 0); //Clear SPI_CTRL_REG[SPI_INT_BIT] interrupt
dataRead = GetWord16(SPI_RX_TX_REG0); // read received byte
SetWord16(SPI_CLEAR_INT_REG, 0x01); // clear pending flag
if(is_last_transaction)
GPIO_SetActive(cs.port, cs.pin); // set CS high
return dataRead;
}
/**
****************************************************************************************
* @brief Read a single item from serial flash via SPI
* @param[in] x: buffer to read the data
****************************************************************************************
*/
inline void getByte_SPI(uint8* x )
{
SetWord16(SPI_RX_TX_REG0, (uint16) DUMMY);
while (GetBits16(SPI_CTRL_REG, SPI_INT_BIT==0));
SetWord16(SPI_CLEAR_INT_REG, 0x01);
*(uint8*)x=(uint8)GetWord16(SPI_RX_TX_REG0);
}
/**
****************************************************************************************
* @brief Read a block of data from spu flash
* @param[in] destination_buffer: buffer to put the data
* @param[in] source_addr: starting position to read the data from spi
* @param[in] len: size of data to read
****************************************************************************************
*/
void SpiFlashRead(unsigned long destination_buffer,unsigned long source_addr,unsigned long len)
{
unsigned long i;
spi_mem_cs_low();
putByte_SPI(0x03);
putByte_SPI((source_addr&0xffffff)>>16);
putByte_SPI((source_addr&0xffff)>>8);
putByte_SPI(source_addr&0xff);
SetWord16(SPI_RX_TX_REG0, (uint16) 0);
__ASM volatile ("nop");
__ASM volatile ("nop");
for (i=0;i<len;i++)
{
SetWord16(SPI_RX_TX_REG0, (uint16) 0);
__ASM volatile ("nop");
__ASM volatile ("nop");
__ASM volatile ("nop");
__ASM volatile ("nop");
__ASM volatile ("nop");
__ASM volatile ("nop");
*(uint8*)(uint32)(destination_buffer+i)=(uint8)GetWord16(SPI_RX_TX_REG0);
}
spi_mem_cs_high();
}
void adc_init(void){
SetWord16(GP_ADC_CTRL_REG, GP_ADC_LDO_EN | GP_ADC_SE);
SetWord16(GP_ADC_CTRL_REG, GP_ADC_LDO_EN | GP_ADC_SE | GP_ADC_EN);
SetWord16(GP_ADC_CTRL2_REG, 0x000E); // Enable 3x attenuation
// SetWord16(GP_ADC_OFFP_REG, 0x297);
}
/**
****************************************************************************************
* @brief Acquires the raw RFADC IQ samples
****************************************************************************************
*/
void trng_get_raw_data(uint32 address, uint32 length)
{
SetWord16(RFPT_ADDR_REG, address);
SetWord16(RFPT_LEN_REG, length);
SetWord16(RFPT_CTRL_REG, 0x1);
while ((GetWord16(RFPT_STAT_REG) & RFPT_ACTIVE)== RFPT_ACTIVE);
}
void quad_decoder_init(QUAD_DEC_INIT_PARAMS_t *quad_dec_init_params)
{
// Enable the Quadrature clock
SetBits16(CLK_PER_REG, QUAD_ENABLE , true);
// Setup Quadrature Decoder pin assignment
SetWord16(QDEC_CTRL2_REG, quad_dec_init_params->chx_port_sel | quad_dec_init_params->chy_port_sel | quad_dec_init_params->chz_port_sel);
SetWord16(QDEC_CLOCKDIV_REG, quad_dec_init_params->qdec_clockdiv);
}
/**
****************************************************************************************
* @brief Write a single item to serial flash via SPI
* @param[in] x: data to send
****************************************************************************************
*/
void putByte_SPI(uint32 x)
{
uint16 tmp;
SetWord16(SPI_RX_TX_REG0, (uint16_t)x); // write (low part of) dataToSend
do
{
} while (GetBits16(SPI_CTRL_REG, SPI_INT_BIT) == 0); // polling to wait for spi transmission
SetWord16(SPI_CLEAR_INT_REG, 0x01); // clear pending flag
tmp = GetWord16(SPI_RX_TX_REG0);
}
void burst_write_to_3wire_SPI_register(uint8_t registerIndex)
{
GPIO_SetPinFunction( sdio.port, sdio.pin, OUTPUT, PID_SPI_DO); // configure SDIO as output
SetWord16(SPI_RX_TX_REG0, (uint16_t)(registerIndex) ); // MSB set to HIGH - A6..A0 Address of register to write to
do {
} while (GetBits16(SPI_CTRL_REG,SPI_INT_BIT)==0); // polling to wait for spi transmission
SetWord16(SPI_CLEAR_INT_REG, 0); // Clear SPI_CTRL_REG[SPI_INT_BIT] interrupt
GPIO_SetPinFunction( sdio.port, sdio.pin, INPUT, PID_SPI_DI); // configure SDIO as input
}
void uart_initialization(void)
{
SetBits16(CLK_PER_REG, UART1_ENABLE, 1); // enable clock for UART 1
SetWord16(UART_LCR_REG, 0x80); // set bit to access DLH and DLL register
SetWord16(UART_IER_DLH_REG,(UART_BAUDRATE_115K2&0xFF>>8));//set high byte
SetWord16(UART_RBR_THR_DLL_REG,UART_BAUDRATE_115K2&0xFF);//set low byte
SetWord16(UART_LCR_REG,UART_DATALENGTH|UART_PARITY|UART_STOPBITS);
SetBits16(UART_MCR_REG, UART_SIRE, 0); // mode 0 for normal , 1 for IRDA
SetWord16(UART_IIR_FCR_REG,1); // enable fifo
SetBits16(UART_IER_DLH_REG,ERBFI_dlh0,0); // IER access, disable interrupt for available data
}
void set_pxact_gpio(void)
{
#if DEVELOPMENT_DEBUG
uint32_t i;
SetWord16(P13_MODE_REG, PID_GPIO|OUTPUT);
SetWord16(P1_SET_DATA_REG, 0x8);
for ( i=0;i<150;i++); //20 is almost 7.6usec of time.
SetWord16(P1_RESET_DATA_REG, 0x8);
#endif
return;
}
/**
****************************************************************************************
* @brief Initialize I2C controller as a master for EEPROM handling.
****************************************************************************************
*/
void i2c_eeprom_init(uint16_t dev_address, uint8_t speed, uint8_t address_mode, uint8_t address_size)
{
mem_address_size = address_size;
SetBits16(CLK_PER_REG, I2C_ENABLE, 1); // enable clock for I2C
SetWord16(I2C_ENABLE_REG, 0x0); // Disable the I2C controller
SetWord16(I2C_CON_REG, I2C_MASTER_MODE | I2C_SLAVE_DISABLE | I2C_RESTART_EN); // Slave is disabled
SetBits16(I2C_CON_REG, I2C_SPEED, speed); // Set speed
SetBits16(I2C_CON_REG, I2C_10BITADDR_MASTER, address_mode); // Set addressing mode
SetWord16(I2C_TAR_REG, dev_address & 0x3FF); // Set Slave device address
SetWord16(I2C_ENABLE_REG, 0x1); // Enable the I2C controller
while( (GetWord16(I2C_STATUS_REG) & 0x20) != 0 ); // Wait for I2C master FSM to be IDLE
i2c_dev_address = dev_address;
}
void NMI_HandlerC(unsigned long *hardfault_args)
{
// Reached this point due to a WDOG timeout
SetBits16(PMU_CTRL_REG, RADIO_SLEEP, 1); // turn off radio PD
SetBits16(PMU_CTRL_REG, PERIPH_SLEEP, 1); // turn off peripheral power domain
SetBits16(CLK_RADIO_REG, BLE_LP_RESET, 1); // reset the BLE LP timer
NVIC_ClearPendingIRQ(BLE_WAKEUP_LP_IRQn); // clear any pending LP IRQs
#if (DEVELOPMENT_DEBUG)
SetWord16(SET_FREEZE_REG, FRZ_WDOG); // Stop WDOG
SetBits16(SYS_CTRL_REG, DEBUGGER_ENABLE, 1); // enable debugger to be able to re-attach
*(volatile unsigned long *)(STATUS_BASE ) = hardfault_args[0]; // R0
*(volatile unsigned long *)(STATUS_BASE + 0x04) = hardfault_args[1]; // R1
*(volatile unsigned long *)(STATUS_BASE + 0x08) = hardfault_args[2]; // R2
*(volatile unsigned long *)(STATUS_BASE + 0x0C) = hardfault_args[3]; // R3
*(volatile unsigned long *)(STATUS_BASE + 0x10) = hardfault_args[4]; // R12
*(volatile unsigned long *)(STATUS_BASE + 0x14) = hardfault_args[5]; // LR
*(volatile unsigned long *)(STATUS_BASE + 0x18) = hardfault_args[6]; // PC
*(volatile unsigned long *)(STATUS_BASE + 0x1C) = hardfault_args[7]; // PSR
*(volatile unsigned long *)(STATUS_BASE + 0x20) = (*((volatile unsigned long *)(0xE000ED28))); // CFSR
*(volatile unsigned long *)(STATUS_BASE + 0x24) = (*((volatile unsigned long *)(0xE000ED2C))); // HFSR
*(volatile unsigned long *)(STATUS_BASE + 0x28) = (*((volatile unsigned long *)(0xE000ED30))); // DFSR
*(volatile unsigned long *)(STATUS_BASE + 0x2C) = (*((volatile unsigned long *)(0xE000ED3C))); // AFSR
*(volatile unsigned long *)(STATUS_BASE + 0x30) = (*((volatile unsigned long *)(0xE000ED34))); // MMAR
*(volatile unsigned long *)(STATUS_BASE + 0x34) = (*((volatile unsigned long *)(0xE000ED38))); // BFAR
if ((GetWord16(SYS_STAT_REG) & DBG_IS_UP) == DBG_IS_UP)
// __asm("BKPT #0\n");
BKPT();
else
{
while(1);
}
#else // DEVELOPMENT_DEBUG
# ifdef PRODUCTION_DEBUG_OUTPUT
// Power up peripherals' power domain
SetBits16(PMU_CTRL_REG, PERIPH_SLEEP, 0);
while (!(GetWord16(SYS_STAT_REG) & PER_IS_UP));
dbg_prod_output(0, hardfault_args);
# endif
// Remap addres 0x00 to ROM and force execution
SetWord16(SYS_CTRL_REG, (GetWord16(SYS_CTRL_REG) & ~REMAP_ADR0) | SW_RESET );
#endif // DEVELOPMENT_DEBUG
}
void Uart_init(void)
{
SetBits16(CLK_PER_REG, UART1_ENABLE, 1); // enable clock for UART 1
SetWord16(UART_LCR_REG, 0x80); // set bit to access DLH and DLL register
SetWord16(UART_IER_DLH_REG,(UART_BAUDRATE_115K2&0xFF>>8));//set high byte
SetWord16(UART_RBR_THR_DLL_REG,UART_BAUDRATE_115K2&0xFF);//set low byte
SetWord16(UART_LCR_REG,UART_DATALENGTH_8|UART_PARITY_NONE|UART_STOPBITS_1);
SetBits16(UART_MCR_REG, UART_SIRE, 0); // mode 0 for normal , 1 for IRDA
SetWord16(UART_IIR_FCR_REG,1); // enable fifo
SetBits16(UART_IER_DLH_REG,ERBFI_dlh0,1); // IER access, disable interrupt for available data
NVIC_SetPriority(UART_IRQn,1);
NVIC_EnableIRQ(UART_IRQn);
}
void spi_439_getblock(int i)
{
uint16_t firstword = spi_439_bufstart0;
if (!(i & 0x01))
firstword = spi_439_bufstart1;
spi_439_block_idx = 20; // 1 Control + 20*2 samples,
SetWord16(SPI_RX_TX_REG1, (uint16_t)firstword);
SetWord16(SPI_RX_TX_REG0, 40); /* Tell 439 it needs to send 40 samples */
#ifdef TESTING_SPI
startpkt=1;
#endif
}
uint8_t burst_read_from_3wire_SPI_register(void)
{
static uint8_t dataRead;
SetWord16(SPI_RX_TX_REG0, (uint16_t)0x00 ); // dummy write data - read data
do {
} while (GetBits16(SPI_CTRL_REG,SPI_INT_BIT)==0); // polling to wait for spi transmission
SetWord16(SPI_CLEAR_INT_REG, 0); // Clear SPI_CTRL_REG[SPI_INT_BIT] interrupt
dataRead = GetWord16(SPI_RX_TX_REG0); // read received byte
SetWord16(SPI_CLEAR_INT_REG, 0x01); // clear pending flag
return dataRead;
}
/**
****************************************************************************************
* @brief Enable pad's and peripheral clocks assuming that peripherals' power domain is down.
* The Uart and SPi clocks are set.
*
****************************************************************************************
*/
void periph_init(void) // set i2c, spi, uart, uart2 serial clks
{
// system init
SetWord16(CLK_AMBA_REG, 0x00); // set clocks (hclk and pclk ) 16MHz
SetWord16(SET_FREEZE_REG,FRZ_WDOG); // stop watch dog
SetBits16(SYS_CTRL_REG,PAD_LATCH_EN,1); // open pads
SetBits16(SYS_CTRL_REG,DEBUGGER_ENABLE,1); // open debugger
SetBits16(PMU_CTRL_REG, PERIPH_SLEEP,0); // exit peripheral power down
// Power up peripherals' power domain
SetBits16(PMU_CTRL_REG, PERIPH_SLEEP, 0);
while (!(GetWord16(SYS_STAT_REG) & PER_IS_UP));
// Initialize UART component
//Init pads
}
/**
****************************************************************************************
* @brief The 439 SPI Interrupt handler, to copy the Audio sample to location in memory
*
* Note that this function is called twice per sample. Note that the SPI interface
* needs 3 16-bits transactions to read one register. We are doing 32 bits transactions
* and therefore need 2 to handle interrupt twice.
*
* @return void
****************************************************************************************
*/
void SPI_Handler(void)
{
// Received SPI interrupt..
SetWord16(SPI_CLEAR_INT_REG, 0x01);
if (spi_439_first)
{
// Start next SPI transaction
SetWord16(SPI_RX_TX_REG1, 0); // write high part of dataToSend
SetWord16(SPI_RX_TX_REG0, 0); // write low part of dataToSend - this will trigger next SPI
spi_439_first = 0;
}
else
/** We are done */
*spi_439_buf_ptr = GetWord16(SPI_RX_TX_REG1); // tst2++; //
}
void SPI_Handler(void)
{
// Received SPI interrupt..
SetWord16(SPI_CLEAR_INT_REG, 0x01);
/* Save the words in memory */
int16_t v1 = (int16_t)GetWord16(SPI_RX_TX_REG1);
int16_t v2 = (int16_t)GetWord16(SPI_RX_TX_REG0);
#ifndef TESTING_SPI
#ifdef MARK_PACKETS
if ((spi_439_block_idx<3) || ((spi_439_block_idx>8) && (spi_439_block_idx<12)))
{
if ((spi_439_block_idx==0) || (spi_439_block_idx==9))
packet_marker+=3000;
if (packet_marker>30000)
packet_marker=0;
v2+=packet_marker;
v1+=packet_marker;
}
#endif
*spi_439_buf_ptr++ = v1; // (int16_t)GetWord16(SPI_RX_TX_REG1);
*spi_439_buf_ptr++ = v2; // (int16_t)GetWord16(SPI_RX_TX_REG0); // spitst++; //
#else
int offs = 0;
if (startpkt==5)
offs=100;
else
startpkt++;
testctn+=testctnincr;
*spi_439_buf_ptr++ =testctn + offs;
testctn+=testctnincr;
*spi_439_buf_ptr++ =testctn;
if (testctn>16000)
testctnincr=-2;
if (testctn<0)
testctnincr=+2;
#endif
if (spi_439_block_idx > 0)
{
// Start next SPI transaction
SetWord16(SPI_RX_TX_REG1, 0); // write high part of dataToSend
SetWord16(SPI_RX_TX_REG0, 0); // write low part of dataToSend - this will trigger next SPI
spi_439_block_idx--;
}
/** else ** We are done */
}
/**
****************************************************************************************
* @brief Enable pad's and peripheral clocks assuming that peripherals' power domain is down.
*
* The Uart and SPi clocks are set.
****************************************************************************************
*/
void periph_init(void) // set i2c, spi, uart, uart2 serial clks
{
// Power up peripherals' power domain
SetBits16(PMU_CTRL_REG, PERIPH_SLEEP, 0);
while (!(GetWord16(SYS_STAT_REG) & PER_IS_UP)) ;
// TODO: Application specific - Modify accordingly!
// Example: Activate UART and SPI.
// Initialize UART component
#ifdef PROGRAM_ENABLE_UART
SetBits16(CLK_PER_REG, UART1_ENABLE, 1); // enable clock - always @16MHz
// baudr=9-> 115k2
// mode=3-> no parity, 1 stop bit 8 data length
#ifdef UART_MEGABIT
uart_init(UART_BAUDRATE_1M, 3);
#else
uart_init(UART_BAUDRATE_115K2, 3);
#endif // UART_MEGABIT
//NVIC_SetPriority(UART_IRQn, 1);
#endif // PROGRAM_ENABLE_UART
#if 0
//Example: Do something with the timer if need be...
SetWord16(TIMER0_CTRL_REG, 0);
SetWord16(TIMER0_RELOAD_M_REG, 0);
SetWord16(TIMER0_RELOAD_N_REG, 0);
SetWord16(TIMER0_ON_REG, 0);
#endif
//rom patch
patch_func();
//Init pads
set_pad_functions();
#if (BLE_APP_PRESENT)
#if BLE_BATTERY_SERVER
app_batt_port_reinit();
#endif //BLE_BATTERY_SERVER
#endif //BLE_APP_PRESENT
// Enable the pads
SetBits16(SYS_CTRL_REG, PAD_LATCH_EN, 1);
}
/**
****************************************************************************************
* @brief Starts RCX20 calibration.
*
* @param[in] cal_time. Calibration time in RCX20 cycles.
*
* @return void
****************************************************************************************
*/
void calibrate_rcx20(uint16_t cal_time)
{
SetWord16(CLK_REF_CNT_REG, cal_time);
SetBits16(CLK_REF_SEL_REG, REF_CLK_SEL, 0x3); //RCX select
SetBits16(CLK_REF_SEL_REG, REF_CAL_START, 0x1); //Start Calibration
cal_enable = 1;
}
void rfpt_init(void)
{
volatile uint16 wait;
SetWord16(CLK_RADIO_REG, 0x0089); // En BLE clk, dis BLE timer, En RFCU, RFCU div by 2
SetWord16(BLE_CNTL2_REG, 0x2000); //
SetBits16 (CLK_AMBA_REG, OTP_ENABLE, 1);
SetBits16 (CLK_AMBA_REG, HCLK_DIV, 0);
SetBits16 (TEST_CTRL_REG, ENABLE_RFPT, 1);
// Recommended settings
//set_recommended_settings();
rf_regs();
IffCalibration();
DCoffsetCalibration();
WAIT100(); // Wait 100 us to finish all DCF signals
}
/**
****************************************************************************************
* @brief
*
* @param[in]
*
* @return
****************************************************************************************
*/
void quad_decoder_release(void)
{
// Reset Quadrature Decoder pin assignment (PLEASE REVIEW)
SetWord16(QDEC_CTRL2_REG, QUAD_DEC_CHXA_NONE_AND_CHXB_NONE | QUAD_DEC_CHYA_NONE_AND_CHYB_NONE | QUAD_DEC_CHZA_NONE_AND_CHZB_NONE);
// Disable the Quadrature clock
SetBits16(CLK_PER_REG, QUAD_ENABLE , false);
}
/**
****************************************************************************************
* @brief SPI 439 Write
* @param[in] address: 12 bits address on 439
* @param[in] data: 16 bits value for the register
*
* To write one data word to 439 with the SPI, 2 transactions are needed.
* - First transaction: send command&address
* - Second transaction: write data
* This functions uses POLLING to check if SPI transaction has completed.
*
* @return data read
****************************************************************************************
*/
void spi_setword(uint32_t address, uint32_t data) // IZP named changed
{
spi_cs_low();
uint32_t dataToSend = ((SC14439_MEM_WR<<13) | (address&0x1FFF ));
SetWord16(SPI_RX_TX_REG0, (uint16_t)dataToSend); // write address
while (!GetBits16(SPI_CTRL_REG, SPI_INT_BIT)); // polling to wait for spi transmission
SetWord16(SPI_CLEAR_INT_REG, 0x01); // clear pending flag
SetWord16(SPI_RX_TX_REG0, (uint16_t)data); // write (low part of) dataToSend
while (!GetBits16(SPI_CTRL_REG, SPI_INT_BIT)); // polling to wait for spi transmission
SetWord16(SPI_CLEAR_INT_REG, 0x01); // clear pending flag
spi_cs_high();
}
void uart_send_byte(char ch){
#ifndef UART_ENABLED
return ;
#else
while((GetWord16(UART_LSR_REG)&0x20)==0); // read status reg to check if THR is empty
SetWord16(UART_RBR_THR_DLL_REG,(0xFF&ch)); // write to THR register
return;
#endif
}
/**
****************************************************************************************
* @brief Gets ADC sample.
*
* @return ADC sample
****************************************************************************************
*/
int adc_get_sample(void){
int cnt=100000;
SetBits16(GP_ADC_CTRL_REG, GP_ADC_START, 1);
while (cnt-- && (GetWord16(GP_ADC_CTRL_REG) & GP_ADC_START) != 0x0000);
SetWord16(GP_ADC_CLEAR_INT_REG, 0x0000); // Clear interrupt
return GetWord16(GP_ADC_RESULT_REG);
}
/**
****************************************************************************************
* @brief Starts RCX20 calibration.
*
* @param[in] cal_time. Calibration time in RCX20 cycles.
*
* @return void
****************************************************************************************
*/
void calibrate_rcx20(uint16_t cal_time)
{
if ((CFG_LP_CLK == LP_CLK_FROM_OTP) || (CFG_LP_CLK == LP_CLK_RCX20))
{
SetWord16(CLK_REF_CNT_REG, cal_time);
SetBits16(CLK_REF_SEL_REG, REF_CLK_SEL, 0x3); //RCX select
SetBits16(CLK_REF_SEL_REG, REF_CAL_START, 0x1); //Start Calibration
cal_enable = 1;
}
}
void uart_sps_init(uint8_t baudr, uint8_t mode )
{
//ENABLE FIFO, REGISTER FCR IF UART_LCR_REG.DLAB=0
SetBits16(UART_LCR_REG, UART_DLAB, 0);
// XMIT FIFO RESET, RCVR FIFO RESET, FIFO ENABLED,
SetWord16(UART_IIR_FCR_REG,0x87); //rcv int when rx fifo 1/2 full
//SetWord16(UART_IIR_FCR_REG,0xC7); //rcv int when rx fifo 14/16 full /* this option will cause the sps application to overflow the Rx FIFO */
//DISABLE INTERRUPTS, REGISTER IER IF UART_LCR_REG.DLAB=0
SetWord16(UART_IER_DLH_REG, 0);
// ACCESS DIVISORLATCH REGISTER FOR BAUDRATE, REGISTER UART_DLH/DLL_REG IF UART_LCR_REG.DLAB=1
SetBits16(UART_LCR_REG, UART_DLAB, 1);
SetWord16(UART_IER_DLH_REG,0);
SetWord16(UART_IER_DLH_REG, (baudr&0xFF>>0x8));
SetWord16(UART_RBR_THR_DLL_REG,baudr&0xFF);
// NO PARITY, 1 STOP BIT, 8 DATA LENGTH
SetWord16(UART_LCR_REG, mode);
//ENABLE TX INTERRUPTS, REGISTER IER IF UART_LCR_REG.DLAB=0
SetBits16(UART_LCR_REG, UART_DLAB, 0);
NVIC_DisableIRQ(UART_IRQn);
NVIC_SetPriority(UART_IRQn,1);
NVIC_EnableIRQ(UART_IRQn);
NVIC_ClearPendingIRQ(UART_IRQn);
// Configure UART environment
uart_sps_env.errordetect = UART_ERROR_DETECT_DISABLED;
uart_sps_env.rx.bufptr = NULL;
uart_sps_env.rx.state = NULL;
uart_sps_env.rx.size = 0;
uart_sps_env.tx.bufptr = NULL;
uart_sps_env.tx.state = NULL;
uart_sps_env.tx.size = 0;
uart_sps_flow_off();
}
/**
****************************************************************************************
* @brief Write to 3-wire SPI
* @param[in] registerIndex: Target address (A6..A0)
* @param[in] valueToWrite: Value to write
*
* @return Number of read bytes
****************************************************************************************
*/
void write_to_3wire_SPI_register(uint8_t registerIndex, uint8_t valueToWrite)
{
GPIO_SetInactive(cs.port, cs.pin); // pull CS low
GPIO_SetPinFunction( sdio.port, sdio.pin, OUTPUT, PID_SPI_DO); // configure SDIO as output
SetWord16(SPI_RX_TX_REG0, (uint16_t)(registerIndex | 0x80) ); // MSB set to HIGH - A6..A0 Address of register to write to
do {
} while (GetBits16(SPI_CTRL_REG,SPI_INT_BIT)==0); // polling to wait for spi transmission
SetWord16(SPI_CLEAR_INT_REG, 0); //Clear SPI_CTRL_REG[SPI_INT_BIT] interrupt
SetWord16(SPI_RX_TX_REG0, (uint16_t)valueToWrite ); // write data
do {
} while (GetBits16(SPI_CTRL_REG,SPI_INT_BIT)==0); // polling to wait for spi transmission
SetWord16(SPI_CLEAR_INT_REG, 0); // Clear SPI_CTRL_REG[SPI_INT_BIT] interrupt
GPIO_SetActive(cs.port, cs.pin); // set CS high
}
/**
********************************************************************m********************
* @brief Send I2C EEPROM's memory address
*
* @param[in] address of the I2C EEPROM memory
****************************************************************************************
*/
void i2c_send_address(uint32_t address_to_send)
{
switch(mem_address_size)
{
case I2C_2BYTES_ADDR:
SetWord16(I2C_ENABLE_REG, 0x0);
SetWord16(I2C_TAR_REG, i2c_dev_address | ((address_to_send & 0x10000) >> 16)); // Set Slave device address
SetWord16(I2C_ENABLE_REG, 0x1);
while( (GetWord16(I2C_STATUS_REG) & 0x20) != 0 ); // Wait for I2C master FSM to be IDLE
SEND_I2C_COMMAND( (address_to_send >> 8) & 0xFF ); // Set address MSB, write access
break;
case I2C_3BYTES_ADDR:
SEND_I2C_COMMAND( (address_to_send >> 16) & 0xFF); // Set address MSB, write access
SEND_I2C_COMMAND( (address_to_send >> 8) & 0xFF); // Set address MSB, write access
break;
}
SEND_I2C_COMMAND(address_to_send & 0xFF); // Set address LSB, write access
}
