X-Git-Url: https://sigrok.org/gitweb/?a=blobdiff_plain;f=src%2Fhardware%2Fhp-3478a%2Fprotocol.h;h=1b7f5cb1e6bfcb479241ae56b239b75ecf66629b;hb=e5137b9343563b27c8ba791360aa408264482153;hp=a36af719f08a4fb18eac31977b7bd25d23192a3f;hpb=1d9eebf4bef4f74f2f2f0f0f9c29836f8d5369e6;p=libsigrok.git

diff --git a/src/hardware/hp-3478a/protocol.h b/src/hardware/hp-3478a/protocol.h
index a36af719..1b7f5cb1 100644
--- a/src/hardware/hp-3478a/protocol.h
+++ b/src/hardware/hp-3478a/protocol.h
@@ -27,9 +27,142 @@
 
 #define LOG_PREFIX "hp-3478a"
 
+#define SB1_FUNCTION_BLOCK	0b11100000
+#define SB1_RANGE_BLOCK		0b00011100
+#define SB1_DIGITS_BLOCK	0b00000011
+
+/* Status Byte 1 (Function) */
+enum sb1_function {
+	FUNCTION_VDC			= 0b00100000,
+	FUNCTION_VAC			= 0b01000000,
+	FUNCTION_2WR			= 0b01100000,
+	FUNCTION_4WR			= 0b10000000,
+	FUNCTION_ADC			= 0b10100000,
+	FUNCTION_AAC			= 0b11000000,
+	FUNCTION_EXR			= 0b11100000,
+};
+
+/* Status Byte 1 (Range V DC) */
+enum sb1_range_vdc {
+	RANGE_VDC_30MV			= 0b00000100,
+	RANGE_VDC_300MV			= 0b00001000,
+	RANGE_VDC_3V			= 0b00001100,
+	RANGE_VDC_30V			= 0b00010000,
+	RANGE_VDC_300V			= 0b00010100,
+};
+
+/* Status Byte 1 (Range V AC) */
+enum sb1_range_vac {
+	RANGE_VAC_300MV			= 0b00000100,
+	RANGE_VAC_3V			= 0b00001000,
+	RANGE_VAC_30V			= 0b00001100,
+	RANGE_VAC_300V			= 0b00010000,
+};
+
+/* Status Byte 1 (Range A) */
+enum sb1_range_a {
+	RANGE_A_300MA			= 0b00000100,
+	RANGE_A_3A			= 0b00001000,
+};
+
+/* Status Byte 1 (Range Ohm) */
+enum sb1_range_ohm {
+	RANGE_OHM_30R			= 0b00000100,
+	RANGE_OHM_300R			= 0b00001000,
+	RANGE_OHM_3KR			= 0b00001100,
+	RANGE_OHM_30KR			= 0b00010000,
+	RANGE_OHM_300KR			= 0b00010100,
+	RANGE_OHM_3MR			= 0b00011000,
+	RANGE_OHM_30MR			= 0b00011100,
+};
+
+/* Status Byte 1 (Digits) */
+enum sb1_digits {
+	DIGITS_5_5			= 0b00000001,
+	DIGITS_4_5			= 0b00000010,
+	DIGITS_3_5			= 0b00000011,
+};
+
+/* Status Byte 2 */
+enum sb2_status {
+	STATUS_INT_TRIGGER		= (1 << 0),
+	STATUS_AUTO_RANGE		= (1 << 1),
+	STATUS_AUTO_ZERO		= (1 << 2),
+	STATUS_50HZ			= (1 << 3),
+	STATUS_FRONT_TERMINAL		= (1 << 4),
+	STATUS_CAL_RAM			= (1 << 5),
+	STATUS_EXT_TRIGGER		= (1 << 6),
+};
+
+/* Status Byte 3 (Serial Poll Mask) */
+enum sb3_srq {
+	SRQ_BUS_AVAIL			= (1 << 0),
+	SRQ_SYNTAX_ERR			= (1 << 2),
+	SRQ_HARDWARE_ERR		= (1 << 3),
+	SRQ_KEYBORD			= (1 << 4),
+	SRQ_CAL_FAILED			= (1 << 5),
+	SRQ_POWER_ON			= (1 << 7),
+};
+
+/* Status Byte 4 (Error) */
+enum sb4_error {
+	ERROR_SELF_TEST			= (1 << 0),
+	ERROR_RAM_SELF_TEST		= (1 << 1),
+	ERROR_ROM_SELF_TEST		= (1 << 2),
+	ERROR_AD_SLOPE			= (1 << 3),
+	ERROR_AD_SELF_TEST		= (1 << 4),
+	ERROR_AD_LINK			= (1 << 5),
+};
+
+/* Channel connector (front terminals or rear terminals. */
+enum terminal_connector {
+	TERMINAL_FRONT,
+	TERMINAL_REAR,
+};
+
+/* Possible triggers */
+enum trigger_state {
+	TRIGGER_UNDEFINED,
+	TRIGGER_EXTERNAL,
+	TRIGGER_INTERNAL,
+};
+
+/* Possible line frequencies */
+enum line_freq {
+	LINE_50HZ,
+	LINE_60HZ,
+};
+
 struct dev_context {
+	struct sr_sw_limits limits;
+
+	double measurement;
+	enum sr_mq measurement_mq;
+	/** The measurement mq flags only contain flags for AC, DC and 4-wire. */
+	enum sr_mqflag measurement_mq_flags;
+	/** The acquisition mq flags also contain flags for autoranging and RMS. */
+	enum sr_mqflag acquisition_mq_flags;
+	enum sr_unit measurement_unit;
+	int range_exp;
+	uint8_t enc_digits;
+	uint8_t spec_digits;
+
+	enum terminal_connector terminal;
+	enum trigger_state trigger;
+	enum line_freq line;
+	gboolean auto_zero;
+	gboolean calibration;
+};
+
+struct channel_context {
+	int index;
+	enum terminal_connector location;
 };
 
+SR_PRIV int hp_3478a_set_mq(const struct sr_dev_inst *sdi, enum sr_mq mq,
+				enum sr_mqflag mq_flags);
+SR_PRIV int hp_3478a_set_range(const struct sr_dev_inst *sdi, int range_exp);
+SR_PRIV int hp_3478a_get_status_bytes(const struct sr_dev_inst *sdi);
 SR_PRIV int hp_3478a_receive_data(int fd, int revents, void *cb_data);
 
 #endif