From: Uwe Hermann Date: Tue, 3 Apr 2018 10:52:38 +0000 (+0200) Subject: zketech-ebd-usb: Make a few functions static. X-Git-Url: https://sigrok.org/gitaction?a=commitdiff_plain;h=cb8a0efc5ce1929858104050c06f83335235676f;p=libsigrok.git zketech-ebd-usb: Make a few functions static. --- diff --git a/src/hardware/zketech-ebd-usb/protocol.c b/src/hardware/zketech-ebd-usb/protocol.c index fe861452..b494aa14 100644 --- a/src/hardware/zketech-ebd-usb/protocol.c +++ b/src/hardware/zketech-ebd-usb/protocol.c @@ -20,13 +20,25 @@ #include #include "protocol.h" +/* Log a byte-array as hex values. */ +static void log_buf(const char *message, uint8_t buf[], size_t count) +{ + char buffer[count * 2 + 1]; + + for (size_t j = 0; j < count; j++) + sprintf(&buffer[2 * j], "%02X", buf[j]); + + buffer[count * 2] = 0; + + sr_dbg("%s: %s [%lu bytes]", message, buffer, count); +} + /* Send a command to the device. */ -SR_PRIV int zketech_ebd_usb_send(struct sr_serial_dev_inst *serial, - uint8_t buf[], size_t count) +static int send_cmd(struct sr_serial_dev_inst *serial, uint8_t buf[], size_t count) { int ret; - zketech_ebd_usb_buffer_debug("Sending", buf, count); + log_buf("Sending", buf, count); ret = serial_write_blocking(serial, buf, count, 0); if (ret < 0) { sr_err("Error sending command: %d.", ret); @@ -37,6 +49,36 @@ SR_PRIV int zketech_ebd_usb_send(struct sr_serial_dev_inst *serial, return (ret == (int)count) ? SR_OK : SR_ERR; } +/* Decode high byte and low byte into a float. */ +static float decode_value(uint8_t hi, uint8_t lo, float divisor) +{ + return ((float)hi * 240.0 + (float)lo) / divisor; +} + +/* Encode a float into high byte and low byte. */ +static void encode_value(float current, uint8_t *hi, uint8_t *lo, float divisor) +{ + int value; + + value = (int)(current * divisor); + sr_dbg("Value %d %d %d", value, value / 240, value % 240); + *hi = value / 240; + *lo = value % 240; +} + +/* Send updated configuration values to the load. */ +static int send_cfg(struct sr_serial_dev_inst *serial, struct dev_context *devc) +{ + uint8_t send[] = { 0xfa, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8 }; + + encode_value(devc->current_limit, &send[2], &send[3], 1000.0); + + send[8] = send[1] ^ send[2] ^ send[3] ^ send[4] ^ send[5] ^ \ + send[6] ^ send[7]; + + return send_cmd(serial, send, 10); +} + /* Send the init/connect sequence; drive starts sending voltage and current. */ SR_PRIV int zketech_ebd_usb_init(struct sr_serial_dev_inst *serial, struct dev_context *devc) @@ -45,7 +87,7 @@ SR_PRIV int zketech_ebd_usb_init(struct sr_serial_dev_inst *serial, (void)devc; - int ret = zketech_ebd_usb_send(serial, init, 10); + int ret = send_cmd(serial, init, 10); if (ret == SR_OK) devc->running = TRUE; @@ -59,12 +101,12 @@ SR_PRIV int zketech_ebd_usb_loadstart(struct sr_serial_dev_inst *serial, uint8_t start[] = { 0xfa, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0xf8 }; int ret; - ret = zketech_ebd_usb_send(serial, start, 10); + ret = send_cmd(serial, start, 10); sr_dbg("Current limit: %f.", devc->current_limit); if (zketech_ebd_usb_current_is0(devc)) return SR_OK; - ret = zketech_ebd_usb_sendcfg(serial, devc); + ret = send_cfg(serial, devc); if (ret == SR_OK) { sr_dbg("Load activated."); devc->load_activated = TRUE; @@ -80,7 +122,7 @@ SR_PRIV int zketech_ebd_usb_loadstop(struct sr_serial_dev_inst *serial, int ret; uint8_t stop[] = { 0xfa, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xF8 }; - ret = zketech_ebd_usb_send(serial, stop, 10); + ret = send_cmd(serial, stop, 10); if (ret == SR_OK) devc->load_activated = FALSE; @@ -96,7 +138,7 @@ SR_PRIV int zketech_ebd_usb_stop(struct sr_serial_dev_inst *serial, (void) devc; - ret = zketech_ebd_usb_send(serial, stop, 10); + ret = send_cmd(serial, stop, 10); if (ret == SR_OK) { devc->load_activated = FALSE; devc->running= FALSE; @@ -105,21 +147,6 @@ SR_PRIV int zketech_ebd_usb_stop(struct sr_serial_dev_inst *serial, return ret; } -/* Send updated configuration values to the load. */ -SR_PRIV int zketech_ebd_usb_sendcfg(struct sr_serial_dev_inst *serial, - struct dev_context *devc) -{ - uint8_t send[] = { 0xfa, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8 }; - - zketech_ebd_usb_value_encode(devc->current_limit, &send[2], - &send[3], 1000.0); - - send[8] = send[1] ^ send[2] ^ send[3] ^ send[4] ^ send[5] ^ \ - send[6] ^ send[7]; - - return zketech_ebd_usb_send(serial, send, 10); -} - /** Read count bytes from the serial connection. */ SR_PRIV int zketech_ebd_usb_read_chars(struct sr_serial_dev_inst *serial, int count, uint8_t *buf) @@ -140,29 +167,11 @@ SR_PRIV int zketech_ebd_usb_read_chars(struct sr_serial_dev_inst *serial, turns++; } while ((received < count) && (turns < 100)); - zketech_ebd_usb_buffer_debug("Received", buf, received); + log_buf("Received", buf, received); return received; } -/* Decode high byte and low byte into a float. */ -SR_PRIV float zketech_ebd_usb_value_decode(uint8_t hi, uint8_t lo, float divisor) -{ - return ((float)hi * 240.0 + (float)lo) / divisor; -} - -/* Encode a float into high byte and low byte. */ -SR_PRIV void zketech_ebd_usb_value_encode(float current, uint8_t *hi, - uint8_t *lo, float divisor) -{ - int value; - - value = (int)(current * divisor); - sr_dbg("Value %d %d %d", value, value / 240, value % 240); - *hi = value / 240; - *lo = value % 240; -} - SR_PRIV int zketech_ebd_usb_receive_data(int fd, int revents, void *cb_data) { struct sr_dev_inst *sdi; @@ -212,9 +221,9 @@ SR_PRIV int zketech_ebd_usb_receive_data(int fd, int revents, void *cb_data) sr_dbg("V: %02X %02X A: %02X %02X -- Limit %02X %02X", reply[4], reply[5], reply[2], reply[3], reply[10], reply[11]); - voltage = zketech_ebd_usb_value_decode(reply[4], reply[5], 1000.0); - current = zketech_ebd_usb_value_decode(reply[2], reply[3], 10000.0); - current_limit = zketech_ebd_usb_value_decode(reply[10], reply[11], 1000.0); + voltage = decode_value(reply[4], reply[5], 1000.0); + current = decode_value(reply[2], reply[3], 10000.0); + current_limit = decode_value(reply[10], reply[11], 1000.0); sr_dbg("Voltage %f", voltage); sr_dbg("Current %f", current); @@ -306,7 +315,7 @@ SR_PRIV int zketech_ebd_usb_set_current_limit(const struct sr_dev_inst *sdi, ret = zketech_ebd_usb_loadstop(sdi->conn, devc); } else { /* Send new current. */ - ret = zketech_ebd_usb_sendcfg(sdi->conn, devc); + ret = send_cfg(sdi->conn, devc); } } else { if (zketech_ebd_usb_current_is0(devc)) { @@ -327,17 +336,3 @@ SR_PRIV gboolean zketech_ebd_usb_current_is0(struct dev_context *devc) { return devc->current_limit < 0.001; } - -/* Log a byte-array as hex values. */ -SR_PRIV void zketech_ebd_usb_buffer_debug(const char *message, uint8_t buf[], - size_t count) -{ - char buffer[count * 2 + 1]; - - for (size_t j = 0; j < count; j++) - sprintf(&buffer[2 * j], "%02X", buf[j]); - - buffer[count * 2] = 0; - - sr_dbg("%s: %s [%lu bytes]", message, buffer, count); -} diff --git a/src/hardware/zketech-ebd-usb/protocol.h b/src/hardware/zketech-ebd-usb/protocol.h index a15282a7..b7646dac 100644 --- a/src/hardware/zketech-ebd-usb/protocol.h +++ b/src/hardware/zketech-ebd-usb/protocol.h @@ -42,12 +42,7 @@ struct dev_context { gboolean load_activated; }; -SR_PRIV float zketech_ebd_usb_value_decode(uint8_t b1, uint8_t b2, float divisor); -SR_PRIV void zketech_ebd_usb_value_encode(float voltage, uint8_t *b1, uint8_t *b2, float divisor); - /* Communication via serial. */ -SR_PRIV int zketech_ebd_usb_send(struct sr_serial_dev_inst *serial, uint8_t buf[], size_t count); -SR_PRIV int zketech_ebd_usb_sendcfg(struct sr_serial_dev_inst *serial, struct dev_context *devc); SR_PRIV int zketech_ebd_usb_read_chars(struct sr_serial_dev_inst *serial, int count, uint8_t *buf); @@ -65,6 +60,4 @@ SR_PRIV int zketech_ebd_usb_set_current_limit(const struct sr_dev_inst *sdi, float current); SR_PRIV gboolean zketech_ebd_usb_current_is0(struct dev_context *devc); -SR_PRIV void zketech_ebd_usb_buffer_debug(const char *message, uint8_t buf[], size_t count); - #endif