EVAL-CN0535-FMCZ Program Files
Dependencies: platform_drivers AD77681
main.cpp
- Committer:
- jngarlitos
- Date:
- 2021-03-15
- Revision:
- 1:f3b5e79a8488
- Parent:
- 0:ae894be1131f
- Child:
- 2:998f1de78dae
File content as of revision 1:f3b5e79a8488:
#include "mbed.h" #include "main.h" #include "app_config.h" #include "cn0535_init_params.h" #define CRC_DEBUG // Descriptor of the main device - the ADC AD7768-1 ad77681_dev *device; // Descriptor of the ADC AD7768-1 Status ad77681_status_registers *current_status; // Structure carying measured data, sampled by the ADC adc_data measured_data; // Initialize the serial object with TX and RX pins Serial pc(USBTX, USBRX); // Initialize the drdy pin as interrupt input InterruptIn drdy(DRDY_PIN, PullNone); // Initialize the adc_rst_pin pin as digital output DigitalOut adc_rst(ADC_RST_PIN); // Initialize the interrupt event variable volatile bool int_event= false; /* * ADC data recteption interrupt from DRDY * * Data reception from the ADC using interrupt generated by the ADC's DRDY (Data Ready) pin * Interrupt triggers falling edge of the active-high DRDY pulse * DRDY pulse is generated by the ADC and frequency of the DRDY pulse depends on the ADC settings: * * DRDY frequency = MCLK / ( MCLK_DIV * FILTER_OSR ) * */ void drdy_interrupt() { int_event = true; if (measured_data.count == measured_data.samples) { // Desired numer of samples has been taken, set everything back drdy.disable_irq(); // Disable interrupt on DRDY pin measured_data.finish = true; // Desired number of samples has been taken measured_data.count = 0; // Set measured data counter to 0 } } int main() { int32_t connected = FAILURE; uint32_t menu; adc_hard_reset(); // Perform hard reset thru GPIO connected = ad77681_setup(&device, init_params, ¤t_status); // SETUP and check connection if(connected == FAILURE) go_to_error(); adc_gpio_init(); // Initilized SDP-K1 GPIOS print_title(); print_prompt(); //============ MAIN WHILE ==================== while(1) { if (pc.readable()) { // Settings menu SWITCH getUserInput(&menu); switch (menu) { case 1: menu_1_set_pgia_gain_mode(); // Set PGIA gain or mode break; case 2: menu_2_set_fda_powermode(); // Set FDA power mode break; case 3: menu_3_set_ad77681_powermode(); // Set FDA power mode break; case 4: menu_4_set_ad77681_clock_divider(); // Set FDA power mode break; case 5: menu_5_set_ad77681_filter_type(); // Set ad7768-1 filter type break; case 6: menu_6_ad77681_AIN_buffers_controll(); // Set ad7768-1 AIN buffers break; case 7: menu_7_ad77681_REF_buffers_controll(); // Set ad7768-1 REF buffers break; case 8: menu_8_set_ad77681_vcm_setup(); // Set ad7768-1 VCM break; case 9: menu_9_set_ad77681_data_output_mode(); // Set ad7768-1 Data output mode break; case 10: menu_10_set_ad77681_diagnostic_mode(); // Set ad7768-1 Diagnostic mode break; case 11: menu_11_set_ad77681_gains_offsets(); // Set ad7768-1 gain and offset break; case 12: menu_12_ad77681_read_master_status(); // Read ad7768-1 Master status break; case 13: menu_13_ad77681_read_register(); // Read ad7768-1 registers break; case 14: menu_14_read_ad77681_single_conv_data(); // Read ad7768-1 single convertion data break; case 15: menu_15_read_ad77681_continuous_data(); // Read ad7768-1 continuous read data break; case 16: menu_16_print_ad77681_continuos_read_data();// Print ad7768-1 continuous read data break; case 17: menu_17_ad77681_check_scratchpad(); // Perform ad7768-1 scratch pad check break; case 18: menu_18_reset_ad77681_ADC(); // Reset ad7768-1 break; case 19: menu_19_set_default_settings(); // Set Board defaul settings break; case 20: menu_20_mclk_vref(); // Set ad7768-1 MCLK and Vref Values break; default: pc.printf("Invalid option"); // Invalid Option print_prompt(); break; } } } } /** * Error warning, in case of unsuccessfull SPI connection * */ void static go_to_error() { int32_t connected = FAILURE; while (1) { pc.printf("ERROR: NOT CONNECTED\nCHECK YOUR PHYSICAL CONNECTION\n\n"); // When not connected, keep showing error message wait(5); connected = ad77681_setup(&device, init_params, ¤t_status); // Keep trying to connect if (connected == SUCCESS) { pc.printf("SUCCESSFULLY RECONNECTED\n\n"); // If successfull reading from scratchpad, init the ADC and go back break; } } } /** * Print title * */ void static print_title() { pc.printf("\n\r"); pc.printf("****************************************************************\n"); pc.printf("* CN0535 Demonstration Program -- (mbed) *\n"); pc.printf("* *\n"); pc.printf("* This program demonstrates Universal Measurement Platform *\n"); pc.printf("* using the AD7768-1 Precision 24-bit sigma-delta AD converter *\n"); pc.printf("* *\n"); pc.printf("* Set the baud rate to 115200 select the newline terminator. *\n"); pc.printf("****************************************************************\n"); } /** * Print main menu to console * */ void static print_prompt() { pc.printf("\n\nCommand Summary:\n\n"); pc.printf(" 1 - Set LTC6373 PGIA Gain/Mode\n"); pc.printf(" 2 - Set ADA4945 FDA Power Mode\n"); pc.printf(" 3 - Set AD7768-1 power mode\n"); pc.printf(" 4 - Set AD7768-1 MCLK clock divider\n"); pc.printf(" 5 - Set AD7768-1 filter type\n"); pc.printf(" 6 - Set AD7768-1 AIN buffers\n"); pc.printf(" 7 - Set AD7768-1 REF buffers\n"); pc.printf(" 8 - Set AD7768-1 VCM output\n"); pc.printf(" 9 - Set AD7768-1 data output mode\n"); pc.printf(" 10 - Set AD7768-1 diagnostic mode\n"); pc.printf(" 11 - Set AD7768-1 Gains and Offsets\n"); pc.printf(" 12 - Read AD7768-1 master status\n"); pc.printf(" 13 - Read AD7768-1 desired register\n"); pc.printf(" 14 - Read AD7768-1 data register\n"); pc.printf(" 15 - Read AD7768-1 continuous mode data\n"); pc.printf(" 16 - Print AD7768-1 Continuous mode measured data\n"); pc.printf(" 17 - AD7768-1 Scratchpad Check \n"); pc.printf(" 18 - Reset AD7768-1 ADC\n"); pc.printf(" 19 - Set to Board Default Config\n"); pc.printf(" 20 - Update Vref and MCLK values\n"); pc.printf("\n\r"); } /** * Set LTC6373 PGIA Gain or Mode * */ void static menu_1_set_pgia_gain_mode(void) { uint32_t new_pgia_gain; uint8_t value; pc.printf(" Avaliable LT6373 PGIA Gains and Mode: \n"); pc.printf(" 1 - Shutdown\n"); pc.printf(" 2 - 0.25V/V\n"); pc.printf(" 3 - 0.50V/V\n"); pc.printf(" 4 - 1V/V\n"); pc.printf(" 5 - 2V/V\n"); pc.printf(" 6 - 4V/V\n"); pc.printf(" 7 - 8V/V\n"); pc.printf(" 8 - 16V/V\n"); pc.printf(" Select an option: \n"); getUserInput(&new_pgia_gain); pc.putc('\n'); switch (new_pgia_gain) { case 1: ad77681_spi_read_mask(device, AD77681_REG_GPIO_WRITE, AD77681_GPIO_WRITE_3_MSK, &value); value |= 7; ad77681_gpio_write(device,value, AD77681_ALL_GPIOS); pc.printf(" PGIA Shutdown selected\n"); break; case 2: ad77681_spi_read_mask(device, AD77681_REG_GPIO_WRITE, AD77681_GPIO_WRITE_3_MSK, &value); value |= 6; ad77681_gpio_write(device,value, AD77681_ALL_GPIOS); pc.printf(" PGIA gain: 0.25V/V selected\n"); break; case 3: ad77681_spi_read_mask(device, AD77681_REG_GPIO_WRITE, AD77681_GPIO_WRITE_3_MSK, &value); value |= 5; ad77681_gpio_write(device,value, AD77681_ALL_GPIOS); pc.printf(" PGIA gain: 0.5V/V selected\n"); break; case 4: ad77681_spi_read_mask(device, AD77681_REG_GPIO_WRITE, AD77681_GPIO_WRITE_3_MSK, &value); value |= 4; ad77681_gpio_write(device,value, AD77681_ALL_GPIOS); pc.printf(" PGIA gain: 1V/V selected\n"); break; case 5: ad77681_spi_read_mask(device, AD77681_REG_GPIO_WRITE, AD77681_GPIO_WRITE_3_MSK, &value); value |= 3; ad77681_gpio_write(device,value, AD77681_ALL_GPIOS); pc.printf(" PGIA gain: 2V/V selected\n"); break; case 6: ad77681_spi_read_mask(device, AD77681_REG_GPIO_WRITE, AD77681_GPIO_WRITE_3_MSK, &value); value |= 2; ad77681_gpio_write(device,value, AD77681_ALL_GPIOS); pc.printf(" PGIA gain: 4V/V selected\n"); break; case 7: ad77681_spi_read_mask(device, AD77681_REG_GPIO_WRITE, AD77681_GPIO_WRITE_3_MSK, &value); value |= 1; ad77681_gpio_write(device,value, AD77681_ALL_GPIOS); pc.printf(" PGIA gain: 8V/V selected\n"); break; case 8: ad77681_spi_read_mask(device, AD77681_REG_GPIO_WRITE, AD77681_GPIO_WRITE_3_MSK, &value); value |= 0; ad77681_gpio_write(device,value, AD77681_ALL_GPIOS); pc.printf(" PGIA gain: 16V/V selected\n"); break; default: pc.printf(" Invalid option\n"); break; } print_prompt(); } /** * Set ADA4945 FDA Mode * */ void static menu_2_set_fda_powermode(void) { uint32_t new_fda_powermode; uint8_t value; pc.printf(" Avaliable LT6373 PGIA Gains and Mode: \n"); pc.printf(" 1 - Full Power Mode\n"); pc.printf(" 2 - Low Power Moden"); pc.printf(" Select an option: \n"); getUserInput(&new_fda_powermode); pc.putc('\n'); switch (new_fda_powermode) { case 1: value = 1; ad77681_gpio_write(device,value, AD77681_GPIO3); pc.printf(" FDA Full Power Mode selected\n"); break; case 2: value = 0; ad77681_gpio_write(device,value, AD77681_GPIO3); pc.printf(" FDA Low Power Mode selected\n"); break; default: pc.printf(" Invalid option\n"); break; } print_prompt(); } /** * Set AD7768-1 power mode * */ void static menu_3_set_ad77681_powermode(void) { uint32_t new_ad77681_pwr_mode; pc.printf(" Avaliable AD7768-1 power modes: \n"); pc.printf(" 1 - Low power mode\n"); pc.printf(" 2 - Median power mode\n"); pc.printf(" 3 - Fast power mode\n"); pc.printf(" Select an option: \n"); getUserInput(&new_ad77681_pwr_mode); pc.putc('\n'); switch (new_ad77681_pwr_mode) { case 1: ad77681_set_power_mode(device, AD77681_ECO); pc.printf(" AD7768-1 Low power mode selected\n"); break; case 2: ad77681_set_power_mode(device, AD77681_MEDIAN); pc.printf(" AD7768-1 Median power mode selected\n"); break; case 3: ad77681_set_power_mode(device, AD77681_FAST); pc.printf(" AD7768-1 Fast power mode selected\n"); break; default: pc.printf(" Invalid option\n"); break; } print_prompt(); } /** * Set AD7768-1 clock divider * */ void static menu_4_set_ad77681_clock_divider(void) { uint32_t new_ad77681_mclk_div; pc.printf(" Avaliable AD7768-1 MCLK divider options: \n"); pc.printf(" 1 - MCLK/16\n"); pc.printf(" 2 - MCLK/8\n"); pc.printf(" 3 - MCLK/4\n"); pc.printf(" 4 - MCLK/2\n"); pc.printf(" Select an option: \n"); getUserInput(&new_ad77681_mclk_div); pc.putc('\n'); switch (new_ad77681_mclk_div) { case 1: ad77681_set_mclk_div(device, AD77681_MCLK_DIV_16); pc.printf(" AD7768-1 MCLK/16 selected\n"); break; case 2: ad77681_set_mclk_div(device, AD77681_MCLK_DIV_8); pc.printf(" AD7768-1 MCLK/8 selected\n"); break; case 3: ad77681_set_mclk_div(device, AD77681_MCLK_DIV_4); pc.printf(" AD7768-1 MCLK/4 selected\n"); break; case 4: ad77681_set_mclk_div(device, AD77681_MCLK_DIV_2); pc.printf(" AD7768-1 MCLK/2 selected\n"); break; default: pc.printf(" Invalid option\n"); break; } ad77681_update_sample_rate(device); // Update the sample rate after changing the MCLK divider print_prompt(); } /** * Set filter type * */ void static menu_5_set_ad77681_filter_type(void) { pc.printf(" Avaliable AD7768-1 Filter Type options: \n"); pc.printf(" 1 - SINC3 Fileter\n"); pc.printf(" 2 - SINC5 Filter\n"); pc.printf(" 3 - Low ripple FIR Filter\n"); pc.printf(" 4 - SINC3 50/60Hz rejection\n"); pc.printf(" 5 - User-defined FIR filter\n"); pc.printf(" Select an option: \n"); uint32_t new_filter = 0; int32_t ret; getUserInput(&new_filter); pc.putc('\n'); switch (new_filter) { case 1: set_SINC3_filter(); break; case 2: set_SINC5_filter(); break; case 3: set_FIR_filter(); break; case 4: set_50HZ_rej(); break; case 5: set_user_defined_FIR(); break; default: pc.printf(" Invalid option\n"); break; } ad77681_update_sample_rate(device); // Update the sample rate after changing the Filter type print_prompt(); } /** * Set SINC3 filter * */ void static set_SINC3_filter(void) { uint32_t new_sinc3 = 0, new_sinc5 = 0; int32_t ret; pc.printf(" AD7768-1 SINC3 filter Oversampling ratios: \n"); pc.printf(" OSR is calculated as (x + 1)*32\n"); pc.printf(" x is SINC3 OSR register value\n"); pc.printf(" Please input a value from 0 to 8192 = 2^13\n :"); ret = getUserInput(&new_sinc3); if ((new_sinc3 >= 0) && (new_sinc3 <= 8192) && (ret == SUCCESS)) { pc.printf("%d\n", new_sinc3); ad77681_set_filter_type(device, AD77681_SINC5_FIR_DECx32, AD77681_SINC3, new_sinc3); pc.printf(" SINC3 OSR is set to %d\n", (new_sinc3 + 1) * 32); } else { pc.printf("%d\n", new_sinc3); pc.printf(" Invalid option - too large number\n"); } } /** * Set SINC5 filter * */ void static set_SINC5_filter(void) { uint32_t new_sinc5; pc.printf(" AD7768-1 SINC5 filter Oversampling ratios: \n"); pc.printf(" 1 - Oversampled by 8\n"); pc.printf(" 2 - Oversampled by 16\n"); pc.printf(" 3 - Oversampled by 32\n"); pc.printf(" 4 - Oversampled by 64\n"); pc.printf(" 5 - Oversampled by 128\n"); pc.printf(" 6 - Oversampled by 256\n"); pc.printf(" 7 - Oversampled by 512\n"); pc.printf(" 8 - Oversampled by 1024\n"); pc.printf(" Select an option: \n"); getUserInput(&new_sinc5); pc.putc('\n'); switch (new_sinc5) { case 1: ad77681_set_filter_type(device, AD77681_SINC5_FIR_DECx32, AD77681_SINC5_DECx8, 0); pc.printf(" SINC5 with OSRx8 set\n"); break; case 2: ad77681_set_filter_type(device, AD77681_SINC5_FIR_DECx32, AD77681_SINC5_DECx16, 0); pc.printf(" SINC5 with OSRx16 set\n"); break; case 3: ad77681_set_filter_type(device, AD77681_SINC5_FIR_DECx32, AD77681_SINC5, 0); pc.printf(" SINC5 with OSRx32 set\n"); break; case 4: ad77681_set_filter_type(device, AD77681_SINC5_FIR_DECx64, AD77681_SINC5, 0); pc.printf(" SINC5 with OSRx64 set\n"); break; case 5: ad77681_set_filter_type(device, AD77681_SINC5_FIR_DECx128, AD77681_SINC5, 0); pc.printf(" SINC5 with OSRx128 set\n"); break; case 6: ad77681_set_filter_type(device, AD77681_SINC5_FIR_DECx256, AD77681_SINC5, 0); pc.printf(" SINC5 with OSRx256 set\n"); break; case 7: ad77681_set_filter_type(device, AD77681_SINC5_FIR_DECx512, AD77681_SINC5, 0); pc.printf(" SINC5 with OSRx512 set\n"); break; case 8: ad77681_set_filter_type(device, AD77681_SINC5_FIR_DECx1024, AD77681_SINC5, 0); pc.printf(" SINC5 with OSRx1024 set\n"); break; default: pc.printf(" Invalid option\n"); break; } } /** * Set FIR filter * */ void static set_FIR_filter(void) { uint32_t new_fir; pc.printf(" AD7768-1 FIR filter Oversampling ratios: \n"); pc.printf(" 1 - Oversampled by 32\n"); pc.printf(" 2 - Oversampled by 64\n"); pc.printf(" 3 - Oversampled by 128\n"); pc.printf(" 4 - Oversampled by 256\n"); pc.printf(" 5 - Oversampled by 512\n"); pc.printf(" 6 - Oversampled by 1024\n"); pc.printf(" Select an option: \n"); getUserInput(&new_fir); pc.putc('\n'); switch (new_fir) { case 1: ad77681_set_filter_type(device, AD77681_SINC5_FIR_DECx32, AD77681_FIR, 0); pc.printf(" FIR with OSRx32 set\n"); break; case 2: ad77681_set_filter_type(device, AD77681_SINC5_FIR_DECx64, AD77681_FIR, 0); pc.printf(" FIR with OSRx64 set\n"); break; case 3: ad77681_set_filter_type(device, AD77681_SINC5_FIR_DECx128, AD77681_FIR, 0); pc.printf(" FIR with OSRx128 set\n"); break; case 4: ad77681_set_filter_type(device, AD77681_SINC5_FIR_DECx256, AD77681_FIR, 0); pc.printf(" FIR with OSRx256 set\n"); break; case 5: ad77681_set_filter_type(device, AD77681_SINC5_FIR_DECx512, AD77681_FIR, 0); pc.printf(" FIR with OSRx512 set\n"); break; case 6: ad77681_set_filter_type(device, AD77681_SINC5_FIR_DECx1024, AD77681_FIR, 0); pc.printf(" FIR with OSRx1024 set\n"); break; default: pc.printf(" Invalid option\n"); break; } } /** * Set 50HZ rejection bit when SINC3 is being used * */ void static set_50HZ_rej(void) { uint32_t new_50Hz; pc.printf(" AD7768-1 SINC3 50/60Hz rejection: \n"); pc.printf(" 1 - 50/60Hz rejection enable \n"); pc.printf(" 2 - 50/60Hz rejection disable \n"); pc.printf(" Select an option: \n"); getUserInput(&new_50Hz); pc.putc('\n'); switch (new_50Hz) { case 1: ad77681_set_50HZ_rejection(device, ENABLE); pc.printf(" SINC3 50/60Hz rejection enabled\n"); break; case 2: ad77681_set_50HZ_rejection(device, DISABLE); pc.printf(" SINC3 50/60Hz rejection disabled\n"); break; default: pc.printf(" Invalid option\n"); break; } } /** * Insert user-defined FIR filter coeffs * */ void static set_user_defined_FIR(void) { const uint8_t coeff_reg_length = 56; // Maximum allowed number of coefficients in the coeff register pc.printf(" AD7768-1 User Defined FIR filter\n"); if ((ARRAY_SIZE(programmable_FIR) <= coeff_reg_length) && (count_of_active_coeffs <= coeff_reg_length)) { pc.printf(" Aplying user-defined FIR filter coefficients from 'cn0535_init_params.h' programmable_FIR[56] \n"); ad77681_programmable_filter(device, programmable_FIR, count_of_active_coeffs); pc.printf(" Coeffs inserted successfully\n"); } else pc.printf(" Incorrect count of coefficients in 'cn0535_init_params.h' programmable_FIR[56]\n"); } /** * AIN and REF buffers controll * */ void static menu_6_ad77681_AIN_buffers_controll(void) { uint32_t new_AD77681_REF_buffer = 0; pc.printf(" AD7768-1 Analog IN precharge buffers settings: \n"); pc.printf(" 1 - Turn ON both precharge buffers\n"); pc.printf(" 2 - Turn OFF both precharge buffers\n"); pc.printf(" 3 - Turn ON AIN- precharge buffer\n"); pc.printf(" 4 - Turn OFF AIN- precharge buffer\n"); pc.printf(" 5 - Turn ON AIN+ precharge buffer\n"); pc.printf(" 6 - Turn OFF AIN+ precharge buffer\n"); pc.printf(" Select an option: \n"); getUserInput(&new_AD77681_REF_buffer); pc.putc('\n'); switch (new_AD77681_REF_buffer) { case 1: ad77681_set_AINn_buffer(device, AD77681_AINn_ENABLED); ad77681_set_AINp_buffer(device, AD77681_AINp_ENABLED); pc.printf(" AIN+ and AIN- enabled\n"); break; case 2: ad77681_set_AINn_buffer(device, AD77681_AINn_DISABLED); ad77681_set_AINp_buffer(device, AD77681_AINp_DISABLED); pc.printf(" AIN+ and AIN- disabled\n"); break; case 3: ad77681_set_AINn_buffer(device, AD77681_AINn_ENABLED); pc.printf(" AIN- Enabled\n"); break; case 4: ad77681_set_AINn_buffer(device, AD77681_AINn_DISABLED); pc.printf(" AIN- Disabled\n"); break; case 5: ad77681_set_AINp_buffer(device, AD77681_AINp_ENABLED); pc.printf(" AIN+ Enabled\n"); break; case 6: ad77681_set_AINp_buffer(device, AD77681_AINp_DISABLED); pc.printf(" AIN+ Disabled\n"); break; default: pc.printf(" Invalid option\n"); break; } print_prompt(); } /** * AIN and REF buffers controll * */ void static menu_7_ad77681_REF_buffers_controll(void) { uint32_t new_REF_buffer = 0; pc.printf(" REF buffers settings: \n"); pc.printf(" 1 - Full REF- reference buffer\n"); pc.printf(" 2 - Full REF+ reference buffer\n"); pc.printf(" 3 - Unbuffered REF- reference buffer\n"); pc.printf(" 4 - Unbuffered REF+ reference buffer\n"); pc.printf(" 5 - Precharge REF- reference buffer\n"); pc.printf(" 6 - Precharge REF+ reference buffer\n"); pc.printf(" Select an option: \n"); getUserInput(&new_REF_buffer); pc.putc('\n'); switch (new_REF_buffer) { case 1: ad77681_set_REFn_buffer(device, AD77681_BUFn_FULL_BUFFER_ON); pc.printf(" Fully buffered REF-\n"); break; case 2: ad77681_set_REFp_buffer(device, AD77681_BUFp_FULL_BUFFER_ON); pc.printf(" Fully buffered REF+\n"); break; case 3: ad77681_set_REFn_buffer(device, AD77681_BUFn_DISABLED); pc.printf(" Unbuffered REF-\n"); break; case 4: ad77681_set_REFp_buffer(device, AD77681_BUFp_DISABLED); pc.printf(" Unbuffered REF+\n"); break; case 5: ad77681_set_REFn_buffer(device, AD77681_BUFn_ENABLED); pc.printf(" Precharge buffer on REF-\n"); break; case 6: ad77681_set_REFp_buffer(device, AD77681_BUFp_ENABLED); pc.printf(" Precharge buffer on REF+\n"); break; default: pc.printf(" Invalid option\n"); break; } print_prompt(); } /** * VCM output controll * */ void static menu_8_set_ad77681_vcm_setup(void) { uint32_t new_vcm = 0; pc.printf(" Avaliable VCM output voltage levels: \n"); pc.printf(" 1 - VCM = (AVDD1-AVSS)/2\n"); pc.printf(" 2 - VCM = 2.5V\n"); pc.printf(" 3 - VCM = 2.05V\n"); pc.printf(" 4 - VCM = 1.9V\n"); pc.printf(" 5 - VCM = 1.65V\n"); pc.printf(" 6 - VCM = 1.1V\n"); pc.printf(" 7 - VCM = 0.9V\n"); pc.printf(" 8 - VCM off\n"); pc.printf(" Select an option: \n"); getUserInput(&new_vcm); pc.putc('\n'); switch (new_vcm) { case 1: ad77681_set_VCM_output(device, AD77681_VCM_HALF_VCC); pc.printf(" VCM set to half of the Vcc\n"); break; case 2: ad77681_set_VCM_output(device, AD77681_VCM_2_5V); pc.printf(" VCM set to 2.5V\n"); break; case 3: ad77681_set_VCM_output(device, AD77681_VCM_2_05V); pc.printf(" VCM set to 2.05V\n"); break; case 4: ad77681_set_VCM_output(device, AD77681_VCM_1_9V); pc.printf(" VCM set to 1.9V\n"); break; case 5: ad77681_set_VCM_output(device, AD77681_VCM_1_65V); pc.printf(" VCM set to 1.65V\n"); break; case 6: ad77681_set_VCM_output(device, AD77681_VCM_1_1V); pc.printf(" VCM set to 1.1V\n"); break; case 7: ad77681_set_VCM_output(device, AD77681_VCM_0_9V); pc.printf(" VCM set to 0.9V\n"); break; case 8: ad77681_set_VCM_output(device, AD77681_VCM_OFF); pc.printf(" VCM OFF\n"); break; default: pc.printf(" Invalid option\n"); break; } print_prompt(); } /** * Set data output mode * */ void static menu_9_set_ad77681_data_output_mode(void) { uint32_t new_data_mode = 0, new_length = 0, new_status = 0, new_crc = 0; pc.printf(" ADC data outpup modes: \n"); pc.printf(" 1 - Continuous: waiting for DRDY\n"); pc.printf(" 2 - Continuous one shot: waiting for SYNC_IN\n"); pc.printf(" 3 - Single-conversion standby\n"); pc.printf(" 4 - Periodic standby\n"); pc.printf(" 5 - Standby mode\n"); pc.printf(" 6 - 16bit or 24bit data format\n"); pc.printf(" 7 - Status bit output\n"); pc.printf(" 8 - Switch form diag mode to measure\n"); pc.printf(" 9 - Switch form measure to diag mode\n"); pc.printf(" 10 - Set CRC type\n"); pc.printf(" Select an option: \n"); getUserInput(&new_data_mode); pc.putc('\n'); switch (new_data_mode) { case 1: ad77681_set_conv_mode(device, AD77681_CONV_CONTINUOUS, device->diag_mux_sel, device->conv_diag_sel); // DIAG MUX NOT SELECTED pc.printf(" Continuous mode set\n"); break; case 2: ad77681_set_conv_mode(device, AD77681_CONV_ONE_SHOT, device->diag_mux_sel, device->conv_diag_sel); pc.printf(" Continuous one shot conversion set\n"); break; case 3: ad77681_set_conv_mode(device, AD77681_CONV_SINGLE, device->diag_mux_sel, device->conv_diag_sel); pc.printf(" Single conversion standby mode set\n"); break; case 4: ad77681_set_conv_mode(device, AD77681_CONV_PERIODIC, device->diag_mux_sel, device->conv_diag_sel); pc.printf(" Periodiec standby mode set\n"); break; case 5: ad77681_set_conv_mode(device, AD77681_CONV_STANDBY, device->diag_mux_sel, device->conv_diag_sel); pc.printf(" Standby mode set\n"); break; case 6: pc.printf(" Conversion length select: \n"); pc.printf(" 1 - 24bit length\n"); pc.printf(" 2 - 16bit length\n"); getUserInput(&new_length); pc.putc('\n'); switch (new_length) { case 1: ad77681_set_convlen(device, AD77681_CONV_24BIT); pc.printf(" 24bit data output format selected\n"); break; case 2: ad77681_set_convlen(device, AD77681_CONV_16BIT); pc.printf(" 16bit data output format selected\n"); break; default: pc.printf(" Invalid option\n"); break; } break; case 7: pc.printf(" Status bit output: \n"); pc.printf(" 1 - Enable status bit after each ADC conversion\n"); pc.printf(" 2 - Disable status bit after each ADC conversion\n"); getUserInput(&new_status); pc.putc('\n'); switch (new_status) { case 1: ad77681_set_status_bit(device, true); pc.printf(" Status bit enabled\n"); break; case 2: ad77681_set_status_bit(device, false); pc.printf(" Status bit disabled\n"); break; default: pc.printf(" Invalid option\n"); break; } break; case 8: ad77681_set_conv_mode(device, device->conv_mode, device->diag_mux_sel, false); // DIAG MUX NOT SELECTED pc.printf(" Measure mode selected\n"); break; case 9: ad77681_set_conv_mode(device, device->conv_mode, device->diag_mux_sel, true); // DIAG MUX SELECTED pc.printf(" Diagnostic mode selected\n"); break; case 10: pc.printf(" CRC settings \n"); pc.printf(" 1 - Disable CRC\n"); pc.printf(" 2 - 8-bit polynomial CRC\n"); pc.printf(" 3 - XOR based CRC\n"); getUserInput(&new_crc); pc.putc('\n'); switch (new_crc) { case 1: if(ad77681_set_crc_sel(device, AD77681_NO_CRC)==SUCCESS) pc.printf(" CRC disabled\n"); else pc.printf("Command Failed\n"); break; case 2: ad77681_set_crc_sel(device, AD77681_CRC); pc.printf(" 8-bit polynomial CRC method selected\n"); break; case 3: ad77681_set_crc_sel(device, AD77681_XOR); pc.printf(" XOR based CRC method selected\n"); break; default: pc.printf(" Invalid option\n"); break; } break; default: pc.printf(" Invalid option\n"); break; } print_prompt(); } /** * Set diagnostic mode * */ void static menu_10_set_ad77681_diagnostic_mode(void) { uint32_t new_diag_mode = 0; pc.printf(" ADC diagnostic modes: \n"); pc.printf(" 1 - Internal temperature sensor\n"); pc.printf(" 2 - AIN shorted\n"); pc.printf(" 3 - Positive full-scale\n"); pc.printf(" 4 - Negative full-scale\n"); pc.printf(" Select an option: \n"); getUserInput(&new_diag_mode); pc.putc('\n'); switch (new_diag_mode) { case 1: ad77681_set_conv_mode(device, device->conv_mode, AD77681_TEMP_SENSOR, true); pc.printf(" Diagnostic mode: Internal temperature sensor selected\n"); break; case 2: ad77681_set_conv_mode(device, device->conv_mode, AD77681_AIN_SHORT, true); pc.printf(" Diagnostic mode: AIN shorted selected\n"); break; case 3: ad77681_set_conv_mode(device, device->conv_mode, AD77681_POSITIVE_FS, true); pc.printf(" Diagnostic mode: Positive full-scale selected\n"); break; case 4: ad77681_set_conv_mode(device, device->conv_mode, AD77681_NEGATIVE_FS, true); pc.printf(" Diagnostic mode: Negative full-scale selected\n"); break; default: pc.printf(" Invalid option\n"); break; } print_prompt(); } /** * Set Gains and Offsets * */ void static menu_11_set_ad77681_gains_offsets(void) { uint32_t gain_offset, ret; uint32_t new_menu_select; pc.printf(" Gains and Offsets settings: \n"); pc.printf(" 1 - Set gain\n"); pc.printf(" 2 - Set offset\n"); pc.printf(" Select an option: \n"); getUserInput(&new_menu_select); pc.putc('\n'); switch (new_menu_select) { case 1: pc.printf(" Insert new Gain value in decimal form\n"); ret = getUserInput(&gain_offset); if ((gain_offset <= 0xFFFFFF) && (ret == SUCCESS)) { ad77681_apply_gain(device, gain_offset); pc.printf(" Value %d has been successfully inserted to the Gain register\n", gain_offset); } else pc.printf(" Invalid value\n"); break; case 2: pc.printf(" Insert new Offset value in decimal form\n"); ret = getUserInput(&gain_offset); if ((gain_offset <= 0xFFFFFF) && (ret == SUCCESS)) { ad77681_apply_offset(device, gain_offset); pc.printf(" Value %d has been successfully inserted to the Offset register\n", gain_offset); } else pc.printf(" Invalid value\n"); break; default: pc.printf(" Invalid option\n"); break; } print_prompt(); } /** * Read ADC status from status registers * */ void static menu_12_ad77681_read_master_status(void) { uint8_t reg_read_buf[3]; char binary_number[8]; ad77681_status(device, current_status); // Read AD7768-1 Status pc.putc('\n'); pc.printf("== MASTER STATUS REGISER\n"); pc.printf("Master error: %s\n", ((current_status->master_error == 0) ? "OK" : "FAULT")); pc.printf("ADC error: %s\n", ((current_status->adc_error == 0) ? "OK" : "FAULT")); pc.printf("Dig error: %s\n", ((current_status->dig_error == 0) ? "OK" : "FAULT")); pc.printf("Ext. clock: %s\n", ((current_status->adc_err_ext_clk_qual == 0) ? "OK" : "FAULT")); pc.printf("Filter saturated: %s\n", ((current_status->adc_filt_saturated == 0) ? "OK" : "FAULT")); pc.printf("Filter not settled: %s\n", ((current_status->adc_filt_not_settled == 0) ? "OK" : "FAULT")); pc.printf("SPI error: %s\n", ((current_status->spi_error == 0) ? "OK" : "FAULT")); pc.printf("POR Flag: %s\n", ((current_status->por_flag == 0) ? "OK" : "FAULT")); if (current_status->spi_error == 1) { pc.printf("\n== SPI DIAG STATUS REGISER\n"); pc.printf("SPI ignore error: %s\n", ((current_status->spi_ignore == 0) ? "OK" : "FAULT")); pc.printf("SPI clock count error: %s\n", ((current_status->spi_clock_count == 0) ? "OK" : "FAULT")); pc.printf("SPI read error: %s\n", ((current_status->spi_read_error == 0) ? "OK" : "FAULT")); pc.printf("SPI write error: %s\n", ((current_status->spi_write_error == 0) ? "OK" : "FAULT")); pc.printf("SPI CRC error: %s\n", ((current_status->spi_crc_error == 0) ? "OK" : "FAULT")); } if (current_status->adc_error == 1) { pc.printf("\n== ADC DIAG STATUS REGISER\n"); pc.printf("DLDO PSM error: %s\n", ((current_status->dldo_psm_error == 0) ? "OK" : "FAULT")); pc.printf("ALDO PSM error: %s\n", ((current_status->aldo_psm_error == 0) ? "OK" : "FAULT")); pc.printf("REF DET error: %s\n", ((current_status->ref_det_error == 0) ? "OK" : "FAULT")); pc.printf("FILT SAT error: %s\n", ((current_status->filt_sat_error == 0) ? "OK" : "FAULT")); pc.printf("FILT NOT SET error: %s\n", ((current_status->filt_not_set_error == 0) ? "OK" : "FAULT")); pc.printf("EXT CLK QUAL error: %s\n", ((current_status->ext_clk_qual_error == 0) ? "OK" : "FAULT")); } if (current_status->dig_error == 1) { pc.printf("\n== DIGITAL DIAG STATUS REGISER\n"); pc.printf("Memory map CRC error: %s\n", ((current_status->memoy_map_crc_error == 0) ? "OK" : "FAULT")); pc.printf("RAM CRC error: %s\n", ((current_status->ram_crc_error == 0) ? "OK" : "FAULT")); pc.printf("FUSE CRC error: %s\n", ((current_status->fuse_crc_error == 0) ? "OK" : "FAULT")); } pc.putc('\n'); print_prompt(); } /** * Register read * */ void static menu_13_ad77681_read_register(void) { uint32_t new_reg_to_read = 0; uint8_t reg_read_buf[3], read_adc_data[6], hex_number = 0; uint8_t HI = 0, MID = 0, LO = 0; char binary_number[8]; pc.printf(" Read desired register: \n"); pc.printf(" 1 - 0x03 - Chip type\n"); pc.printf(" 2 - 0x14 - Interface format\n"); pc.printf(" 3 - 0x15 - Power clock\n"); pc.printf(" 4 - 0x16 - Analog\n"); pc.printf(" 5 - 0x17 - Analog2\n"); pc.printf(" 6 - 0x18 - Conversion\n"); pc.printf(" 7 - 0x19 - Digital filter\n"); pc.printf(" 8 - 0x1A - SINC3 Dec. rate MSB\n"); pc.printf(" 9 - 0x1B - SINC3 Dec. rate LSB\n"); pc.printf(" 10 - 0x1C - Duty cycle ratio\n"); pc.printf(" 11 - 0x1D - Sync, Reset\n"); pc.printf(" 12 - 0x1E - GPIO Controll\n"); pc.printf(" 13 - 0x1F - GPIO Write\n"); pc.printf(" 14 - 0x20 - GPIO Read\n"); pc.printf(" 15 - 0x21 - 0x23 - Offset register\n"); pc.printf(" 16 - 0x24 - 0x26 - Gain register\n"); pc.printf(" 17 - 0x2C - ADC Data\n"); pc.printf(" Select an option: \n"); getUserInput(&new_reg_to_read); pc.putc('\n'); switch (new_reg_to_read) { case 1: ad77681_spi_reg_read(device, AD77681_REG_CHIP_TYPE, reg_read_buf); print_binary(reg_read_buf[1], binary_number); pc.printf(" Value of 0x03 - Chip type register is: 0x%x 0b%s\n", reg_read_buf[1], binary_number); break; case 2: ad77681_spi_reg_read(device, AD77681_REG_INTERFACE_FORMAT, reg_read_buf); print_binary(reg_read_buf[1], binary_number); pc.printf(" Value of 0x14 - Interface format register is: 0x%x 0b%s\n", reg_read_buf[1], binary_number); break; case 3: ad77681_spi_reg_read(device, AD77681_REG_POWER_CLOCK, reg_read_buf); print_binary(reg_read_buf[1], binary_number); pc.printf(" Value of 0x15 - Power clock register is: 0x%x 0b%s\n", reg_read_buf[1], binary_number); break; case 4: ad77681_spi_reg_read(device, AD77681_REG_ANALOG, reg_read_buf); print_binary(reg_read_buf[1], binary_number); pc.printf(" Value of 0x16 - Anlaog register is: 0x%x 0b%s\n", reg_read_buf[1], binary_number); break; case 5: ad77681_spi_reg_read(device, AD77681_REG_ANALOG2, reg_read_buf); print_binary(reg_read_buf[1], binary_number); pc.printf(" Value of 0x17 - Analog2 regster is: 0x%x 0b%s\n", reg_read_buf[1], binary_number); break; case 6: ad77681_spi_reg_read(device, AD77681_REG_CONVERSION, reg_read_buf); print_binary(reg_read_buf[1], binary_number); pc.printf(" Value of 0x18 - Conversion register is: 0x%x 0b%s\n", reg_read_buf[1], binary_number); break; case 7: ad77681_spi_reg_read(device, AD77681_REG_DIGITAL_FILTER, reg_read_buf); print_binary(reg_read_buf[1], binary_number); pc.printf(" Value of 0x19 - Digital filter register is: 0x%x 0b%s\n", reg_read_buf[1], binary_number); break; case 8: ad77681_spi_reg_read(device, AD77681_REG_SINC3_DEC_RATE_MSB, reg_read_buf); print_binary(reg_read_buf[1], binary_number); pc.printf(" Value of 0x1A - SINC3 Dec. rate MSB is: 0x%x 0b%s\n", reg_read_buf[1], binary_number); break; case 9: ad77681_spi_reg_read(device, AD77681_REG_SINC3_DEC_RATE_LSB, reg_read_buf); print_binary(reg_read_buf[1], binary_number); pc.printf(" Value of 0x1B - SINC3 Dec. rate LSB is: 0x%x 0b%s\n", reg_read_buf[1], binary_number); break; case 10: ad77681_spi_reg_read(device, AD77681_REG_DUTY_CYCLE_RATIO, reg_read_buf); print_binary(reg_read_buf[1], binary_number); pc.printf(" Value of 0x1C - Duty cycle ratio 0x%x 0b%s\n", reg_read_buf[1], binary_number); break; case 11: ad77681_spi_reg_read(device, AD77681_REG_SYNC_RESET, reg_read_buf); print_binary(reg_read_buf[1], binary_number); pc.printf(" Value of 0x1D - Sync, Reset 0x%x 0b%s\n", reg_read_buf[1], binary_number); break; case 12: ad77681_spi_reg_read(device, AD77681_REG_GPIO_CONTROL, reg_read_buf); print_binary(reg_read_buf[1], binary_number); pc.printf(" Value of 0x1E - GPIO Controll is: 0x%x 0b%s\n", reg_read_buf[1], binary_number); break; case 13: ad77681_spi_reg_read(device, AD77681_REG_GPIO_WRITE, reg_read_buf); print_binary(reg_read_buf[1], binary_number); pc.printf(" Value of 0x1F - GPIO Write is: 0x%x 0b%s\n", reg_read_buf[1], binary_number); break; case 14: ad77681_spi_reg_read(device, AD77681_REG_GPIO_READ, reg_read_buf); print_binary(reg_read_buf[1], binary_number); pc.printf(" Value of 0x20 - GPIO Read is: 0x%x 0b%s\n", reg_read_buf[1], binary_number); break; case 15: ad77681_spi_reg_read(device, AD77681_REG_OFFSET_HI, reg_read_buf); HI = reg_read_buf[1]; ad77681_spi_reg_read(device, AD77681_REG_OFFSET_MID, reg_read_buf); MID = reg_read_buf[1]; ad77681_spi_reg_read(device, AD77681_REG_OFFSET_LO, reg_read_buf); LO = reg_read_buf[1]; pc.printf(" Value of 0x21 - 0x23 - Offset register is: 0x%x %x %x\n", HI, MID, LO); break; case 16: ad77681_spi_reg_read(device, AD77681_REG_GAIN_HI, reg_read_buf); HI = reg_read_buf[1]; ad77681_spi_reg_read(device, AD77681_REG_GAIN_MID, reg_read_buf); MID = reg_read_buf[1]; ad77681_spi_reg_read(device, AD77681_REG_GAIN_LO, reg_read_buf); LO = reg_read_buf[1]; pc.printf(" Value of 0x24 - 0x26 - Gain register is: 0x%x %x %x\n", HI, MID, LO); break; case 17: ad77681_spi_read_adc_data(device, read_adc_data, AD77681_REGISTER_DATA_READ); pc.printf(" Value of 0x2C - ADC data is: 0x%x 0x%x 0x%x\n", read_adc_data[1], read_adc_data[2], read_adc_data[3]); break; case 18: ad77681_spi_reg_read(device, AD77681_REG_INTERFACE_FORMAT, reg_read_buf); print_binary(reg_read_buf[1], binary_number); pc.printf(" Value of 0x14 -REG_INTERFACE_FORMATis: 0x%x 0b%s\n", reg_read_buf[1], binary_number); break; default : pc.printf(" Invalid option\n"); break; } print_prompt(); } /** * Print measured data and transfered to voltage * */ void static menu_14_read_ad77681_single_conv_data(void) { uint8_t adc_reg[6]; uint32_t raw_code; int32_t converted_data; double voltage; int32_t shifted_data; char buf[15]; ad77681_spi_read_adc_data(device, adc_reg, AD77681_REGISTER_DATA_READ); raw_code = (adc_reg[1] << 16) | (adc_reg[2] << 8) | (adc_reg[3] << 0); // Printing Voltage pc.printf("\n\nVoltage\n"); ad77681_data_to_voltage(device, &raw_code, &voltage); sprintf(buf, "%.9f \n",voltage); pc.printf(buf); memset(buf, 0, sizeof(buf));//clears buffer // Printing Raw Code pc.printf("\n\nRaw Code\n"); pc.printf("%d\n", raw_code); // Printing Shifted Code pc.printf("\n\nShifted Code\n"); if (raw_code & 0x800000) shifted_data = (int32_t)((0xFF << 24) | raw_code); else shifted_data = (int32_t)((0x00 << 24) | raw_code); pc.printf("%d\n", shifted_data + AD7768_HALF_SCALE); print_prompt(); } /** * Read ADC data * */ void static menu_15_read_ad77681_continuous_data(void) { uint8_t buf[6]; uint32_t new_sample_count = 0; int32_t ret; pc.printf(" Read Continuous ADC Data"); pc.printf(" Input number of samples (1 to 4096): \n"); ret = getUserInput(&new_sample_count); // Get user input if ((new_sample_count <= 4096) && (ret == SUCCESS) ) { pc.printf("\n%d of samples\n", new_sample_count); // Print Desired Measurement Count measured_data.samples = (uint16_t)(new_sample_count); measured_data.finish = false; measured_data.count = 0; pc.printf("Sampling....\n"); ad77681_set_continuos_read(device, AD77681_CONTINUOUS_READ_ENABLE); __enable_irq(); // Enable all interupts drdy.enable_irq(); // Enable interrupt on DRDY pin drdy.fall(&drdy_interrupt); // Interrupt on falling edne of DRDY while (!measured_data.finish) { // While loop. Waiting for the measurements to be completed if (int_event==true) { // Checks if Interrupt Occurred ad77681_spi_read_adc_data(device, buf, AD77681_CONTINUOUS_DATA_READ); // Read the continuous read data if (device->conv_len == AD77681_CONV_24BIT) // 24bit format measured_data.raw_data[measured_data.count] = (buf[0] << 16 | buf[1] << 8 | buf[2]<< 0); // Combining the SPI buffers else // 16bit format measured_data.raw_data[measured_data.count] = (buf[0] << 8 | buf[1]<< 0); // Combining the SPI buffers measured_data.count++; // Increment Measured Data Counter int_event=false; // Set int event flag after reading the Data } } ad77681_set_continuos_read(device, AD77681_CONTINUOUS_READ_DISABLE); // Disable continuous ADC read pc.printf("Done Sampling....\n"); } else { pc.printf(" Invalid option\n"); } print_prompt(); } /** * Print measured data and transfered to voltage * */ void static menu_16_print_ad77681_continuos_read_data(void) { double voltage; int32_t shifted_data; uint16_t i; char buf[15]; if (measured_data.finish) { // Printing Voltage pc.printf("\n\nVoltage\n"); for ( i = 0; i < measured_data.samples; i++) { ad77681_data_to_voltage(device, &measured_data.raw_data[i], &voltage); sprintf(buf, "%.9f \n",voltage); pc.printf(buf); memset(buf, 0, sizeof(buf));//clears buffer } // Printing Codes pc.printf("\n\nCodes\n"); for(i = 0 ; i < measured_data.samples ; i++) { if (measured_data.raw_data[i] & 0x800000) shifted_data = (int32_t)((0xFF << 24) | measured_data.raw_data[i]); else shifted_data = (int32_t)((0x00 << 24) | measured_data.raw_data[i]); pc.printf("%d\n", shifted_data + AD7768_HALF_SCALE); } // Printing Raw Date pc.printf("\n\nRaw data\n"); for (i = 0; i < measured_data.samples; i++) pc.printf("%d\n", measured_data.raw_data[i]); // Set measured_data.finish to false after Printing measured_data.finish = false; } else pc.printf("Data not prepared\n"); print_prompt(); } /** * Chceck read and write functionaity by writing to and reading from scratchpad register * */ void static menu_17_ad77681_check_scratchpad(void) { uint32_t new_menu_select; uint8_t chceck_sequence; int32_t ret; pc.printf(" Scratchpad check\n"); pc.printf(" Insert 8bit number for scratchpad check: \n"); ret = getUserInput(&new_menu_select); // Get user input if ((new_menu_select <= 0xFF) && (new_menu_select >= 0) && (ret == SUCCESS)) { chceck_sequence = (uint8_t)(new_menu_select); ret = ad77681_scratchpad(device, &chceck_sequence); // Write and read Scratch Pad pc.printf(" Insered sequence: %d\n Returned sequence: %d\n", new_menu_select, chceck_sequence); if (ret == SUCCESS) pc.printf(" SUCCESS!\n"); else pc.printf(" FAILURE!\n"); } else pc.printf(" Invalid value\n"); print_prompt(); } void static menu_18_reset_ad77681_ADC(void) { uint32_t new_reset_option = 0; pc.printf(" ADC reset opportunities: \n"); pc.printf(" 1 - Soft reset - over SPI\n"); pc.printf(" 2 - Hard reset - uing RESET pin\n"); pc.printf(" Select an option: \n"); getUserInput(&new_reset_option); pc.putc('\n'); switch (new_reset_option) { case 1: ad77681_soft_reset(device); // Perform soft reset thru SPI write pc.printf(" ADC after soft reset\n"); break; case 2: adc_hard_reset(); // Perform hard reset thru GPIO pc.printf(" ADC after hard reset\n"); break; default: pc.printf(" Invalid option\n"); break; } print_prompt(); } /** * Rest and set the Board to default setting * */ void static menu_19_set_default_settings(void) { int32_t default_settings_flag; adc_hard_reset(); // Perform hard reset thru GPIO default_settings_flag = ad77681_setup(&device, init_params, ¤t_status); // SETUP and check connection adc_gpio_init(); // Initilized SDP-K1 GPIOS if (default_settings_flag == SUCCESS) pc.printf("\n Default settings successfull loaded\n"); else pc.printf("\n Error in settings, please reset the ADC\n"); print_prompt(); } /** * Set Vref anc MCLK as "exteranl" values, depending on you setup * */ void static menu_20_mclk_vref(void) { uint32_t input = 0, new_settings = 0; int32_t ret; pc.printf(" Set Vref and Mclk: \n"); pc.printf(" 1 - Change Vref\n"); pc.printf(" 2 - Change MCLK\n"); pc.printf(" Select an option: \n"); getUserInput(&new_settings); pc.putc('\n'); switch (new_settings) { case 1: pc.printf(" Change Vref from %d mV to [mV]: ", device->vref); // Vref change ret = getUserInput(&input); if ((input >= 1000) && (input <= 5000) && (ret == SUCCESS)) { pc.printf("\n New Vref value is %d mV", input); device->vref = input; } else pc.printf(" Invalid option\n"); pc.putc('\n'); break; case 2: pc.printf(" Change MCLK from %d kHz to [kHz]: ", device->mclk); // MCLK change ret = getUserInput(&input); if ((input >= 10000) && (input <= 50000) && (ret == SUCCESS)) { pc.printf("\n New MCLK value is %d kHz\n", input); device->vref = input; ad77681_update_sample_rate(device); // Update the sample rate after changinig the MCLK } else pc.printf(" Invalid option\n"); pc.putc('\n'); break; default: pc.printf(" Invalid option\n"); break; } print_prompt(); } /** * Prints out an array in binary form * */ void static print_binary(uint8_t number, char *binary_number) { for (int8_t i = 7; i >= 0; i--) { if (number & 1) binary_number[i] = '1'; else binary_number[i] = '0'; number >>= 1; } } /** * Read user input from uart * *UserInput = 0 if failure * */ int32_t static getUserInput(uint32_t *UserInput) { long uart_val; int32_t ret; ret = pc.scanf("%ld", &uart_val); // Return 1 = OK, Return 0 = Fail if((ret == 0) || (uart_val < 0)) { // Failure if uart_val is negative, or non-digit *UserInput = 0; return FAILURE; } *UserInput = (uint32_t)(uart_val); return SUCCESS; } /** * ADC hard reset thru SDP-K1 GPIO * */ void static adc_hard_reset() { adc_rst=0; // Set ADC reset pin to Low mdelay(100); // Delay 100ms adc_rst=1; // Set ADC reset pin to High mdelay(100); // Delay 100ms } /** * ADC hard reset thru SDP-K1 GPIO * */ void static adc_gpio_init() { ad77681_global_gpio(device, AD77681_GLOBAL_GPIO_ENABLE); // Enable AD7768-1 GPIO pins ad77681_gpio_inout(device, AD77681_GPIO_CNTRL_ALL_GPIOS_OP_EN(0x0F), AD77681_ALL_GPIOS); // Set AD7768-1 GPIO1 - GPIO3 as Output ad77681_gpio_write(device,AD77681_GPIO_CNTRL_ALL_GPIOS_OP_EN(0x05), AD77681_ALL_GPIOS); // Set FDA to Low Power mode and PGIA Gain to 1 }