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Adaptation for 160 LED strip 

WARNING: This includes an incompatbile protocol change: The module index and
the action are now in separate bytes, as 8 bits are needed for the module
index.

Also, the module index is now 32 bit internally to make future upgrades easier.
This commit is contained in:
Thomas Kolb 2017-01-29 15:45:52 +00:00
parent fc33207e8f
commit dda7385517
7 changed files with 38 additions and 37 deletions
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4
Makefile
View File

@ -10,8 +10,8 @@ LD=gcc
BUILD:=debug
# basic build flags configuration
CFLAGS+=-std=c99 -Wall -pedantic -Wno-long-long -D_POSIX_C_SOURCE=20120607L -D_FILE_OFFSET_BITS=64
LIBS+=-lm -lrt
CFLAGS+=-std=c99 -Wall -pedantic -Wno-long-long -D_POSIX_C_SOURCE=20120607L -D_FILE_OFFSET_BITS=64 -pthread
LIBS+=-lm -lrt -pthread
# library specific flags
# wiringPi

8
include/fader.h
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@ -3,11 +3,11 @@
#include <stdint.h>
int fader_init(uint8_t nMod);
int fader_init(uint32_t nMod);
void fader_shutdown(void);
void fader_set_colour(uint8_t module, uint8_t r, uint8_t g, uint8_t b);
void fader_fade_colour(uint8_t module, uint8_t r, uint8_t g, uint8_t b);
void fader_add_colour(uint8_t module, uint8_t r, uint8_t g, uint8_t b);
void fader_set_colour(uint32_t module, uint8_t r, uint8_t g, uint8_t b);
void fader_fade_colour(uint32_t module, uint8_t r, uint8_t g, uint8_t b);
void fader_add_colour(uint32_t module, uint8_t r, uint8_t g, uint8_t b);
void fader_set_fadestep(uint8_t newFadestep);
void fader_update(void);
void fader_wait_frame(void);

4
include/ws2801.h
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@ -3,9 +3,9 @@
#include <stdint.h>
int ws2801_init(uint8_t num_modules);
int ws2801_init(uint32_t num_modules);
void ws2801_shutdown(void);
void ws2801_set_colour(uint8_t module, uint8_t red, uint8_t green, uint8_t blue);
void ws2801_set_colour(uint32_t module, uint8_t red, uint8_t green, uint8_t blue);
void ws2801_send_update(void);
#endif // WS2801_H

14
src/fader.c
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@ -6,7 +6,7 @@
#include "../include/fader.h"
uint8_t numModules;
uint32_t numModules;
float fadestep = 1;
double nextFrame;
@ -22,7 +22,7 @@ struct Colour {
struct Colour *curColour;
struct Colour *targetColour;
int fader_init(uint8_t nMod)
int fader_init(uint32_t nMod)
{
numModules = nMod;
@ -38,7 +38,7 @@ int fader_init(uint8_t nMod)
return -1;
}
for(uint8_t i = 0; i < numModules; i++) {
for(uint32_t i = 0; i < numModules; i++) {
curColour[i].red = targetColour[i].red = 0;
curColour[i].green = targetColour[i].green = 0;
curColour[i].blue = targetColour[i].blue = 0;
@ -56,7 +56,7 @@ void fader_shutdown(void)
free(targetColour);
}
void fader_set_colour(uint8_t module, uint8_t r, uint8_t g, uint8_t b)
void fader_set_colour(uint32_t module, uint8_t r, uint8_t g, uint8_t b)
{
curColour[module].red = targetColour[module].red = r;
curColour[module].green = targetColour[module].green = g;
@ -65,14 +65,14 @@ void fader_set_colour(uint8_t module, uint8_t r, uint8_t g, uint8_t b)
somethingChanged = 1;
}
void fader_fade_colour(uint8_t module, uint8_t r, uint8_t g, uint8_t b)
void fader_fade_colour(uint32_t module, uint8_t r, uint8_t g, uint8_t b)
{
targetColour[module].red = r;
targetColour[module].green = g;
targetColour[module].blue = b;
}
void fader_add_colour(uint8_t module, uint8_t r, uint8_t g, uint8_t b)
void fader_add_colour(uint32_t module, uint8_t r, uint8_t g, uint8_t b)
{
curColour[module].red += r;
curColour[module].green += g;
@ -133,7 +133,7 @@ void fade_colour(float *cur, const float *target, int *changed)
void fader_update(void)
{
for(uint8_t i = 0; i < numModules; i++) {
for(uint32_t i = 0; i < numModules; i++) {
fade_colour(&(curColour[i].red), &(targetColour[i].red), &somethingChanged);
fade_colour(&(curColour[i].green), &(targetColour[i].green), &somethingChanged);
fade_colour(&(curColour[i].blue), &(targetColour[i].blue), &somethingChanged);

2
src/main.c
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@ -12,7 +12,7 @@
#define PORT 2703
#define NUM_MODULES 20
#define NUM_MODULES 160
int main(void)
{

24
src/udpproto.c
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@ -47,10 +47,10 @@ int udpproto_process(void)
{
socklen_t remote_addr_len;
struct sockaddr remote_addr;
uint8_t pkgbuf[256];
uint8_t pkgbuf[65536];
ssize_t rcvbytes, offset = 0;
uint8_t cmd, r, g, b, action, module;
uint8_t r, g, b, action, module;
int fds_ready;
// check if there is data to be read (to prevent blocking)
@ -71,7 +71,7 @@ int udpproto_process(void)
// receive the data
remote_addr_len = sizeof(remote_addr);
rcvbytes = recvfrom(sock, pkgbuf, 256, 0, (struct sockaddr*)&remote_addr, &remote_addr_len);
rcvbytes = recvfrom(sock, pkgbuf, 65536, 0, (struct sockaddr*)&remote_addr, &remote_addr_len);
if(rcvbytes == -1) {
LOG(LVL_ERR, "udpproto: recvfrom() failed: %s.", strerror(errno));
return -1;
@ -81,15 +81,13 @@ int udpproto_process(void)
// parse commands from packet
offset = 0;
while(offset <= rcvbytes - 3) {
cmd = pkgbuf[offset + 0];
r = pkgbuf[offset + 1];
g = pkgbuf[offset + 2];
b = pkgbuf[offset + 3];
offset += 4;
action = (cmd & 0xC0) >> 6; // the upper 2 bits
module = cmd & 0x3F; // the lower 6 bits
while(offset <= rcvbytes - 4) {
action = pkgbuf[offset + 0];
module = pkgbuf[offset + 1];
r = pkgbuf[offset + 2];
g = pkgbuf[offset + 3];
b = pkgbuf[offset + 4];
offset += 5;
switch(action) {
case SET_COLOUR:
@ -113,7 +111,7 @@ int udpproto_process(void)
}
}
return rcvbytes / 4; // number of commands in packet
return rcvbytes / 5; // number of commands in packet
}
void udpproto_shutdown(void)

19
src/ws2801.c
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@ -15,11 +15,11 @@
#include "../include/ws2801.h"
static const char *spi_dev = "/dev/spidev0.0";
static const uint32_t spi_speed = 250000; // clock freq in Hz
static const uint32_t spi_speed = 1000000; // clock freq in Hz
static const uint16_t spi_delay = 0; // us
static const uint8_t spi_bits = 8; // bits per word
uint8_t numModules;
uint32_t numModules;
uint8_t *message;
int spi_fd = 0;
@ -40,12 +40,12 @@ void send_message(void)
}
}
int ws2801_init(uint8_t nMod)
int ws2801_init(uint32_t nMod)
{
// Initialize SPI
// We need to have stable data at falling edge of the spi interface (this
// means rising edge at the led strip, as the signal is inverted.
uint8_t spi_mode = SPI_NO_CS | SPI_CPOL;
uint8_t spi_mode = SPI_NO_CS; // | SPI_CPOL;
spi_fd = open(spi_dev, O_RDWR);
if(spi_fd < 0) {
@ -87,11 +87,14 @@ void ws2801_shutdown(void)
if(message != NULL) { free(message); message = NULL; }
}
void ws2801_set_colour(uint8_t module, uint8_t red, uint8_t green, uint8_t blue)
void ws2801_set_colour(uint32_t module, uint8_t red, uint8_t green, uint8_t blue)
{
message[3*module + 0] = ~red;
message[3*module + 1] = ~green;
message[3*module + 2] = ~blue;
//message[3*module + 0] = ~red;
//message[3*module + 1] = ~green;
//message[3*module + 2] = ~blue;
message[3*module + 0] = red;
message[3*module + 1] = blue;
message[3*module + 2] = green;
}
void ws2801_send_update(void)