Renesas RX110

RX Family ADC Module Using Firmware Integration Technology
R01AN1666EJ0220 Rev. 2.20 Page 27 of 74
Dec 01, 2016
typedef struct st_adc_cfg
{
adc_speed_t conv_speed; // ADCSR.ADHSC, rx230 has two
// conversion speeds
adc_align_t alignment; // ADCER.ADRFMT, Left or Right
// alignment,ignored if addition used
adc_add_t add_cnt; // ADADC.ADC, Addition/average
// count select.
adc_clear_t clearing; // ADCER.ACE, Automatic clearing
// enable/disable after read
adc_trig_t trigger; // ADSTRGR.TRSA, default and Group A
// trigger source
adc_trig_t trigger_groupb; // valid only for group modes
uint8_t priority; // for S12ADIO int; 1=lo 15=hi 0=off/polled
uint8_t priority_groupb; // S12GBADI interrupt priority; 0-15
} adc_cfg_t;
/***** ADC_CONTROL() ARGUMENT DEFINITIONS *****/
typedef enum e_adc_cmd
{
// Commands for special hardware configurations
ADC_CMD_USE_VREFL0, // Low reference. Default is to use AVSS0.
ADC_CMD_USE_VREFH0, // High reference. Default is to use AVCC0.
ADC_CMD_SET_DDA_STATE_CNT, // For Disconnect Detection Assist
ADC_CMD_SET_SAMPLE_STATE_CNT, // Set the conversion time
// Command to configure channels, sensors, and comparator
ADC_CMD_ENABLE_CHANS, // Configure channels to scan
ADC_CMD_ENABLE_TEMP_SENSOR, // "configure" temperature sensor
ADC_CMD_ENABLE_VOLT_SENSOR, // "configure" internal ref voltage sensor
ADC_CMD_EN_COMPARATOR_LEVEL, // Enable comparator for threshold compare
ADC_CMD_EN_COMPARATOR_WINDOW, // Enable comparator for range compare
// Commands to enable hardware triggers or cause software trigger
ADC_CMD_ENABLE_TRIG, // ADCSR.TRGE=1 for sync/asynchronous
// triggers
ADC_CMD_SCAN_NOW, // Software trigger start scan
// Commands to poll for scan completion and comparator results
ADC_CMD_CHECK_SCAN_DONE, // For Normal or GroupA scan
ADC_CMD_CHECK_SCAN_DONE_GROUPA,
ADC_CMD_CHECK_SCAN_DONE_GROUPB,
ADC_CMD_CHECK_CONDITION_MET, // comparator condition
// Advanced control commands
ADC_CMD_DISABLE_TRIG, // ADCSR.TRGE=0 for sync/async trigs
ADC_CMD_DISABLE_INT, // interrupt disable; ADCSR.ADIE=0
ADC_CMD_ENABLE_INT, // interrupt enable; ADCSR.ADIE=1
ADC_CMD_DISABLE_INT_GROUPB, // interrupt disable; ADCSR.GBADIE=0
ADC_CMD_ENABLE_INT_GROUPB, // interrupt enable; ADCSR.GBADIE=1
} adc_cmd_t;
/* for ADC_CMD_SET_DDA_STATE_CNT */
typedef enum e_adc_charge // Disconnection Detection Assist (DDA)
{
ADC_DDA_DISCHARGE = 0x00,