various fixes, basic acquisition works
This commit is contained in:
Bert Vermeulen
parent
54b38f64aa
commit
6937bb757e
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@ -28,6 +28,7 @@
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#include <string.h>
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#include <sys/time.h>
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#include <inttypes.h>
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#include <arpa/inet.h>
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#include <glib.h>
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#include "sigrok.h"
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@ -80,7 +81,7 @@ static int capabilities[] = {
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};
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static struct samplerates samplerates = {
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1,
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10,
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MHZ(200),
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1,
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0
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@ -90,17 +91,17 @@ static struct samplerates samplerates = {
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static GSList *device_instances = NULL;
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/* current state of the flag register */
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uint32_t flag_reg = 0;
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static uint32_t flag_reg = 0;
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static uint64_t cur_samplerate = 0;
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static uint64_t limit_samples = 0;
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/* pre/post trigger capture ratio, in percentage. 0 means no pre-trigger data. */
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int capture_ratio = 0;
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static uint32_t probe_mask = 0, trigger_mask[4] = {0}, trigger_value[4] = {0};
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static int capture_ratio = 0;
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static uint32_t probe_mask = 0xffffffff, trigger_mask[4] = {0}, trigger_value[4] = {0};
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int send_shortcommand(int fd, uint8_t command)
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static int send_shortcommand(int fd, uint8_t command)
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{
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char buf[1];
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@ -113,16 +114,16 @@ int send_shortcommand(int fd, uint8_t command)
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}
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int send_longcommand(int fd, uint8_t command, uint32_t data)
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static int send_longcommand(int fd, uint8_t command, uint32_t data)
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{
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char buf[5];
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g_message("ols: sending cmd 0x%.2x data 0x%.8x", command, data);
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buf[0] = command;
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buf[1] = data & 0xff;
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buf[2] = data & 0xff00 >> 8;
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buf[3] = data & 0xff0000 >> 16;
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buf[4] = data & 0xff000000 >> 24;
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buf[1] = (data & 0xff000000) >> 24;
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buf[2] = (data & 0xff0000) >> 16;
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buf[3] = (data & 0xff00) >> 8;
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buf[4] = data & 0xff;
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if(write(fd, buf, 5) != 5)
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return SIGROK_ERR;
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@ -133,75 +134,76 @@ static int configure_probes(GSList *probes)
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{
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struct probe *probe;
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GSList *l;
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int probe_bit, changrp_mask, stage, i;
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int probe_bit, stage, i;
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char *tc;
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probe_mask = 0;
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for(i = 0; i < NUM_TRIGGER_STAGES; i++)
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{
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for(i = 0; i < NUM_TRIGGER_STAGES; i++) {
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trigger_mask[i] = 0;
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trigger_value[i] = 0;
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}
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for(l = probes; l; l = l->next)
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{
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for(l = probes; l; l = l->next) {
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probe = (struct probe *) l->data;
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if(!probe->enabled)
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continue;
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/* set up the probe mask for later configuration into the flag register */
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probe_bit = 1 << (probe->index - 1);
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probe_mask |= probe_bit;
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if(probe->trigger)
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{
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stage = 0;
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for(tc = probe->trigger; *tc; tc++)
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{
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trigger_mask[stage] |= probe_bit;
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if(*tc == '1')
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trigger_value[stage] |= probe_bit;
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stage++;
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if(stage > 3)
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{
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/* only supporting parallel mode, with up to 4 stages */
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return SIGROK_ERR;
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}
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}
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continue;
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/* configure trigger mask and value */
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stage = 0;
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for(tc = probe->trigger; tc && *tc; tc++) {
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trigger_mask[stage] |= probe_bit;
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if(*tc == '1')
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trigger_value[stage] |= probe_bit;
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stage++;
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if(stage > 3)
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/* TODO: only supporting parallel mode, with up to 4 stages */
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return SIGROK_NOK;
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}
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}
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/* enable/disable channel groups in the flag register according
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* to the probe mask we just made. The register stores them backwards,
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* hence shift right from 1000.
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*/
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changrp_mask = 0;
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for(i = 0; i < 4; i++)
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{
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if(probe_mask & (0xff << i))
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changrp_mask |= 8 >> i;
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}
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/* but the flag register wants them here */
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flag_reg |= changrp_mask << 2;
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return SIGROK_OK;
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}
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static void byteswap(uint32_t *in)
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{
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uint32_t out;
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out = (*in & 0xff) << 8;
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out |= (*in & 0xff00) >> 8;
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out |= (*in & 0xff0000) << 8;
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out |= (*in & 0xff000000) >> 8;
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*in = out;
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}
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static int hw_init(char *deviceinfo)
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{
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struct sigrok_device_instance *sdi;
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GSList *ports, *l;
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GPollFD *fds;
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struct termios term, *prev_termios;
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int devcnt, final_devcnt, num_ports, fd, i;
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int devcnt, final_devcnt, num_ports, fd, ret, i;
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char buf[8], **device_names;
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if(deviceinfo)
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ports = g_slist_append(NULL, g_strdup(deviceinfo));
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ports = g_slist_append(NULL, strdup(deviceinfo));
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else
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/* no specific device given, so scan all serial ports */
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ports = list_serial_ports();
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num_ports = g_slist_length(ports);
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fds = g_malloc0(num_ports * sizeof(GPollFD));
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device_names = g_malloc(num_ports * (sizeof(char *)));
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prev_termios = g_malloc(num_ports * sizeof(struct termios));
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fds = calloc(1, num_ports * sizeof(GPollFD));
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device_names = malloc(num_ports * (sizeof(char *)));
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prev_termios = malloc(num_ports * sizeof(struct termios));
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devcnt = 0;
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for(l = ports; l; l = l->next) {
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/* The discovery procedure is like this: first send the Reset command (0x00) 5 times,
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@ -210,27 +212,36 @@ static int hw_init(char *deviceinfo)
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* Since it may take the device a while to respond at 115Kb/s, we do all the sending
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* first, then wait for all of them to respond with g_poll().
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*/
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g_message("probing %s...", (char *) l->data);
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fd = open(l->data, O_RDWR | O_NONBLOCK);
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if(fd != -1) {
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tcgetattr(fd, &prev_termios[devcnt]);
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tcgetattr(fd, &term);
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cfsetispeed(&term, SERIAL_SPEED);
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term.c_cflag &= ~CSIZE;
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term.c_cflag |= CS8;
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term.c_cflag &= ~CSTOPB;
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term.c_cflag |= IXON | IXOFF;
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term.c_iflag |= IGNPAR;
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tcsetattr(fd, TCSADRAIN, &term);
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memset(buf, CMD_RESET, 5);
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buf[5] = CMD_ID;
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if(write(fd, buf, 6) == 6) {
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fds[devcnt].fd = fd;
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fds[devcnt].events = G_IO_IN;
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device_names[devcnt] = l->data;
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devcnt++;
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g_message("probed device %s", (char *) l->data);
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}
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else {
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/* restore port settings. of course, we've crapped all over the port. */
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tcsetattr(fd, TCSADRAIN, &prev_termios[devcnt]);
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g_free(l->data);
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ret = SIGROK_OK;
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for(i = 0; i < 5; i++) {
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if( (ret = send_shortcommand(fd, CMD_RESET)) != SIGROK_OK) {
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/* serial port is not writable... restore port settings */
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tcsetattr(fd, TCSADRAIN, &prev_termios[devcnt]);
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close(fd);
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break;
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}
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}
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if(ret != SIGROK_OK)
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continue;
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send_shortcommand(fd, CMD_ID);
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fds[devcnt].fd = fd;
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fds[devcnt].events = G_IO_IN;
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device_names[devcnt] = strdup(l->data);
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devcnt++;
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}
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free(l->data);
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}
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/* 2ms should do it, that's enough time for 28 bytes to go over the bus */
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@ -251,21 +262,26 @@ static int hw_init(char *deviceinfo)
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sdi->serial = serial_device_instance_new(device_names[i], -1);
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device_instances = g_slist_append(device_instances, sdi);
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final_devcnt++;
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close(fds[i].fd);
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fds[i].fd = 0;
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}
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}
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free(device_names[i]);
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}
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if(fds[i].fd != 0)
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if(fds[i].fd != 0) {
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tcsetattr(fds[i].fd, TCSADRAIN, &prev_termios[i]);
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close(fds[i].fd);
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close(fds[i].fd);
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}
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}
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g_free(fds);
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g_free(device_names);
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g_free(prev_termios);
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free(fds);
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free(device_names);
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free(prev_termios);
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g_slist_free(ports);
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cur_samplerate = samplerates.low;
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return final_devcnt;
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}
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@ -380,13 +396,13 @@ static int set_configuration_samplerate(struct sigrok_device_instance *sdi, uint
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if(samplerate > CLOCK_RATE) {
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flag_reg |= FLAG_DEMUX;
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divider = (uint8_t) (CLOCK_RATE * 2 / samplerate) - 1;
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divider = (CLOCK_RATE * 2 / samplerate) - 1;
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}
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else {
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flag_reg &= FLAG_DEMUX;
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divider = (uint8_t) (CLOCK_RATE / samplerate) - 1;
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flag_reg &= ~FLAG_DEMUX;
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divider = (CLOCK_RATE / samplerate) - 1;
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}
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divider <<= 8;
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divider = htonl(divider);
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g_message("setting samplerate to %"PRIu64" Hz (divider %u, demux %s)", samplerate, divider,
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flag_reg & FLAG_DEMUX ? "on" : "off");
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@ -441,8 +457,8 @@ static int receive_data(int fd, int revents, void *user_data)
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static int num_transfers = 0;
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static int num_bytes = 0;
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static char last_sample[4] = {0xff};
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static unsigned char sample[4];
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int count, buflen, i;
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static unsigned char sample[4] = {0}, tmp_sample[4];
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int count, buflen, num_channels, i, j;
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struct datafeed_packet packet;
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unsigned char byte, *buffer;
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@ -452,17 +468,20 @@ static int receive_data(int fd, int revents, void *user_data)
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* a byte, that means it's finished. we'll double that to 30ms to be sure...
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*/
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source_remove(fd);
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source_add(fd, G_IO_IN, 30, receive_data, user_data);
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source_add(fd, G_IO_IN, 100, receive_data, user_data);
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}
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/* TODO: / 4 depends on # of channels used */
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if(revents == G_IO_IN && num_transfers / 4 <= limit_samples){
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num_channels = 0;
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for(i = 0x20; i > 0x02; i /= 2)
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if((flag_reg & i) == 0)
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num_channels++;
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if(revents == G_IO_IN && num_transfers / num_channels <= limit_samples) {
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if(read(fd, &byte, 1) != 1)
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return FALSE;
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sample[num_bytes++] = byte;
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if(num_bytes == 4) {
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g_message("got sample 0x%.2x%.2x%.2x%.2x", sample[3], sample[2], sample[1], sample[0]);
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if(num_bytes == num_channels) {
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/* got a full sample */
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if(flag_reg & FLAG_RLE) {
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/* in RLE mode -1 should never come in as a sample, because
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@ -492,21 +511,40 @@ static int receive_data(int fd, int revents, void *user_data)
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buflen = 4;
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}
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if(num_channels < 4) {
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/* some channel groups may have been turned off, to speed up transfer
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* between the hardware and the PC. expand that here before submitting
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* it over the session bus -- whatever is listening on the bus will be
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* expecting a full 32-bit sample, based on the number of probes.
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*/
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j = 0;
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memset(tmp_sample, 0, 4);
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for(i = 0; i < 4; i++) {
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if((flag_reg & (8 >> i)) == 0) {
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/* this channel group was enabled, copy from received sample */
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tmp_sample[i] = sample[j++];
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}
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}
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memcpy(sample, tmp_sample, 4);
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}
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/* send it all to the session bus */
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packet.type = DF_LOGIC32;
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packet.length = buflen;
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packet.payload = buffer;
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session_bus(user_data, &packet);
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if(buffer == sample)
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memcpy(last_sample, buffer, 4);
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memcpy(last_sample, buffer, num_channels);
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else
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g_free(buffer);
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memset(sample, 0, 4);
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num_bytes = 0;
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}
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}
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else {
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/* this is the main loop telling us a timeout was reached -- we're done */
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/* this is the main loop telling us a timeout was reached, or we've
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* acquired all the samples we asked for -- we're done */
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tcflush(fd, TCIOFLUSH);
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close(fd);
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packet.type = DF_END;
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@ -523,7 +561,10 @@ static int hw_start_acquisition(int device_index, gpointer session_device_id)
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struct datafeed_packet *packet;
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struct datafeed_header *header;
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struct sigrok_device_instance *sdi;
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int i;
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uint32_t data;
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uint16_t readcount, delaycount;
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uint8_t changrp_mask;
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if(!(sdi = get_sigrok_device_instance(device_instances, device_index)))
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return SIGROK_ERR;
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@ -531,54 +572,80 @@ static int hw_start_acquisition(int device_index, gpointer session_device_id)
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if(sdi->status != ST_ACTIVE)
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return SIGROK_ERR;
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/* reset again */
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if(send_longcommand(sdi->serial->fd, CMD_RESET, 0) != SIGROK_OK)
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return SIGROK_ERR;
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if(trigger_mask[0]) {
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/* trigger masks */
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if(send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_MASK_0, trigger_mask[0]) != SIGROK_OK)
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return SIGROK_NOK;
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if(send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_MASK_1, trigger_mask[1]) != SIGROK_OK)
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return SIGROK_NOK;
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if(send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_MASK_2, trigger_mask[2]) != SIGROK_OK)
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return SIGROK_NOK;
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if(send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_MASK_3, trigger_mask[3]) != SIGROK_OK)
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return SIGROK_NOK;
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/* send flag register */
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data = flag_reg << 24;
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if(send_longcommand(sdi->serial->fd, CMD_SET_FLAGS, data) != SIGROK_OK)
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return SIGROK_ERR;
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if(send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_VALUE_0, trigger_value[0]) != SIGROK_OK)
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return SIGROK_NOK;
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if(send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_VALUE_1, trigger_value[1]) != SIGROK_OK)
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return SIGROK_NOK;
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if(send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_VALUE_2, trigger_value[2]) != SIGROK_OK)
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return SIGROK_NOK;
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if(send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_VALUE_3, trigger_value[3]) != SIGROK_OK)
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return SIGROK_NOK;
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/* trigger configuration */
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/* TODO: the start flag should only be on the last used stage I think... */
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if(send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_CONFIG_0, 0x00000008) != SIGROK_OK)
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return SIGROK_NOK;
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if(send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_CONFIG_1, 0x00000000) != SIGROK_OK)
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return SIGROK_NOK;
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if(send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_CONFIG_2, 0x00000000) != SIGROK_OK)
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return SIGROK_NOK;
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if(send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_CONFIG_3, 0x00000000) != SIGROK_OK)
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return SIGROK_NOK;
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delaycount = limit_samples / 4 * (capture_ratio / 100);
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} else {
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if(send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_MASK_0, trigger_mask[0]) != SIGROK_OK)
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return SIGROK_NOK;
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if(send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_VALUE_0, trigger_value[0]) != SIGROK_OK)
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return SIGROK_NOK;
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if(send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_CONFIG_0, 0x00000008) != SIGROK_OK)
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return SIGROK_NOK;
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delaycount = limit_samples / 4;
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}
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set_configuration_samplerate(sdi, cur_samplerate);
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/* send sample limit and pre/post-trigger capture ratio */
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data = limit_samples / 4 << 16;
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if(capture_ratio)
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data |= (limit_samples - (limit_samples / 100 * capture_ratio)) / 4;
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data = 0x00190019;
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readcount = limit_samples / 4;
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if(flag_reg & FLAG_DEMUX) {
|
||||
data = (delaycount - 8) & 0xfff8 << 13;
|
||||
data |= (readcount - 4) & 0xffff;
|
||||
} else {
|
||||
flag_reg |= FLAG_FILTER;
|
||||
data = (readcount - 1) << 16;
|
||||
data |= (delaycount - 1);
|
||||
}
|
||||
/* TODO: htonl()? */
|
||||
byteswap(&data);
|
||||
if(send_longcommand(sdi->serial->fd, CMD_CAPTURE_SIZE, data) != SIGROK_OK)
|
||||
return SIGROK_ERR;
|
||||
|
||||
/* trigger masks */
|
||||
if(send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_MASK_0, trigger_mask[0]) != SIGROK_OK)
|
||||
return SIGROK_ERR;
|
||||
// if(send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_MASK_1, trigger_mask[1]) != SIGROK_OK)
|
||||
// return SIGROK_ERR;
|
||||
// if(send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_MASK_2, trigger_mask[2]) != SIGROK_OK)
|
||||
// return SIGROK_ERR;
|
||||
// if(send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_MASK_3, trigger_mask[3]) != SIGROK_OK)
|
||||
// return SIGROK_ERR;
|
||||
/* flag register */
|
||||
/* enable/disable channel groups in the flag register according to the
|
||||
* probe mask. The register stores them backwards, hence shift right from 1000.
|
||||
*/
|
||||
changrp_mask = 0;
|
||||
for(i = 0; i < 4; i++)
|
||||
{
|
||||
if(probe_mask & (0xff << (i * 8)))
|
||||
changrp_mask |= (8 >> i);
|
||||
}
|
||||
/* but the flag register wants them here, with 1 meaning "disable channel" */
|
||||
flag_reg |= ~(changrp_mask << 2) & 0x3c;
|
||||
|
||||
if(send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_VALUE_0, trigger_value[0]) != SIGROK_OK)
|
||||
return SIGROK_ERR;
|
||||
// if(send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_VALUE_1, trigger_value[1]) != SIGROK_OK)
|
||||
// return SIGROK_ERR;
|
||||
// if(send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_VALUE_2, trigger_value[2]) != SIGROK_OK)
|
||||
// return SIGROK_ERR;
|
||||
// if(send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_VALUE_3, trigger_value[3]) != SIGROK_OK)
|
||||
// return SIGROK_ERR;
|
||||
|
||||
/* trigger configuration */
|
||||
/* TODO: the start flag should only be on the last used stage I think... */
|
||||
if(send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_CONFIG_0, 0x00000008) != SIGROK_OK)
|
||||
return SIGROK_ERR;
|
||||
// if(send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_CONFIG_1, 0x00000000) != SIGROK_OK)
|
||||
// return SIGROK_ERR;
|
||||
// if(send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_CONFIG_2, 0x00000000) != SIGROK_OK)
|
||||
// return SIGROK_ERR;
|
||||
// if(send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_CONFIG_3, 0x00000000) != SIGROK_OK)
|
||||
// return SIGROK_ERR;
|
||||
|
||||
set_configuration_samplerate(sdi, cur_samplerate);
|
||||
data = flag_reg << 24;
|
||||
if(send_longcommand(sdi->serial->fd, CMD_SET_FLAGS, data) != SIGROK_OK)
|
||||
return SIGROK_NOK;
|
||||
|
||||
/* start acquisition on the device */
|
||||
if(send_shortcommand(sdi->serial->fd, CMD_RUN) != SIGROK_OK)
|
||||
|
|
|
|||
Loading…
Reference in New Issue