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OLS Improvements #51

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OLS Improvements #51

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8ea06d6
ols: Clean up: Obey code style
v1ne Jan 23, 2021
e5dc9e6
ols: Provide sample count in RLE mode
v1ne Feb 23, 2021
86bf1d5
ols: Don't store temporary data in device context
v1ne Feb 23, 2021
fd87a59
ols: Don't silently ignore error when setting up the device
v1ne Feb 23, 2021
23f9047
ols: Fix demuxer operation
v1ne Feb 23, 2021
b3ef78e
ols: Fix off-by-one when setting up trigger stages
v1ne Feb 23, 2021
6621a22
ols: Adjust pre-trigger delay
v1ne Feb 23, 2021
c67f087
ols: Flip samples after reading everything
v1ne Feb 23, 2021
f05c040
ols: Use a dynamic sample buffer
v1ne Feb 23, 2021
84d6e00
ols: Be more robust against short reads
v1ne Feb 23, 2021
72fae1a
ols: Make resetting more robust, reset at the end
v1ne Feb 23, 2021
7fc0db4
ols: Clean up: Rename variables, remove misleading counter
v1ne Feb 23, 2021
3a39f13
ols: Clean up: Always keep sample_buf_size up to date
v1ne Feb 23, 2021
05e39c5
ols: Communicate internally that the number of samples is a multiple …
v1ne Feb 23, 2021
1a2437b
ols: Immediately process data after expected sample count
v1ne Feb 23, 2021
e068d80
ols: Receive many bytes in a row
v1ne Feb 23, 2021
fadfd5e
ols: Capture multiple bytes at once
v1ne Feb 23, 2021
e58ecb2
ols: Determine the right trigger point when using RLE
v1ne Feb 23, 2021
6af1de2
ols: Support Demon Core RLE mode 3
v1ne Feb 23, 2021
5696a4d
ols: Add support for advanced triggers
v1ne Feb 23, 2021
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16 changes: 11 additions & 5 deletions src/hardware/openbench-logic-sniffer/protocol.c
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Original file line number Diff line number Diff line change
Expand Up @@ -395,8 +395,8 @@ SR_PRIV int ols_receive_data(int fd, int revents, void *cb_data)
struct sr_datafeed_packet packet;
struct sr_datafeed_logic logic;
uint32_t sample;
int num_bytes_read;
unsigned int i, j, num_changroups;
unsigned char byte;
gboolean received_a_byte;

(void)fd;
Expand All @@ -419,12 +419,18 @@ SR_PRIV int ols_receive_data(int fd, int revents, void *cb_data)

received_a_byte = FALSE;
while (revents == G_IO_IN &&
serial_read_nonblocking(serial, &byte, 1) == 1) {
(num_bytes_read = serial_read_nonblocking(
serial, devc->raw_sample + devc->raw_sample_size,
num_changroups - devc->raw_sample_size)) > 0) {
received_a_byte = TRUE;
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Timeout handling will still work the same, right?
Maybe 'received_a_byte' should be renamed to 'received_a_sample'?

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Yes, timeout handling is unaffected. We're just reading more at the same time.

About the variable: Since a sample can span multiple bytes but the serial interface might only deliver 1 byte (theoretically), I think received_a_byte is actually still correct.

devc->cnt_rx_bytes++;
devc->cnt_rx_bytes += num_bytes_read;
devc->raw_sample_size += num_bytes_read;

sr_spew("Received data. Current sample: %.2x%.2x%.2x%.2x (%u bytes)",
devc->raw_sample[0], devc->raw_sample[1],
devc->raw_sample[2], devc->raw_sample[3],
devc->raw_sample_size);

devc->raw_sample[devc->raw_sample_size++] = byte;
sr_spew("Received byte 0x%.2x.", byte);
if (devc->raw_sample_size == num_changroups) {
unsigned int samples_to_write, new_sample_buf_size;

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