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Basic i2c

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This commit is contained in:
Adam Honse
2022-11-27 23:15:53 +00:00
parent e0be60de21
commit 428692fa3a
6 changed files with 124 additions and 5 deletions
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94
Controllers/LEDStripController/LEDStripController.cpp
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@@ -5,6 +5,7 @@
\*---------------------------------------------------------*/
#include "LEDStripController.h"
#include "ResourceManager.h"
#include <fstream>
#include <iostream>
@@ -26,13 +27,16 @@ void LEDStripController::Initialize(char* ledstring, led_protocol proto)
LPSTR source = NULL;
LPSTR udpport_baud = NULL;
LPSTR next = NULL;
//Set the protocol
protocol = proto;
//Assume serial device unless a different protocol is specified
bool serial = TRUE;
//Default i2c address out of range
i2c_addr = 255;
source = strtok_s(ledstring, ",", &next);
//Check if we are setting up a Keyboard Visualizer UDP protocol device
@@ -41,7 +45,7 @@ void LEDStripController::Initialize(char* ledstring, led_protocol proto)
source = source + 4;
serial = FALSE;
}
//Check for either the UDP port or the serial baud rate
if (strlen(next))
{
@@ -56,7 +60,13 @@ void LEDStripController::Initialize(char* ledstring, led_protocol proto)
if (serial)
{
if (udpport_baud == NULL)
if (protocol == LED_PROTOCOL_BASIC_I2C)
{
//I2C uses the baud field for address
i2c_addr = atoi(udpport_baud);
InitializeI2C(source);
}
else if (udpport_baud == NULL)
{
//Initialize with default baud rate
InitializeSerial(source, 115200);
@@ -86,6 +96,24 @@ void LEDStripController::Initialize(char* ledstring, led_protocol proto)
}
}
void LEDStripController::InitializeI2C(char* i2cname)
{
for(unsigned int i2c_idx = 0; i2c_idx < ResourceManager::get()->GetI2CBusses().size(); i2c_idx++)
{
if(ResourceManager::get()->GetI2CBusses()[i2c_idx]->device_name == std::string(i2cname))
{
if(i2c_addr < 128)
{
i2cport = ResourceManager::get()->GetI2CBusses()[i2c_idx];
break;
}
}
}
serialport = NULL;
udpport = NULL;
}
void LEDStripController::InitializeSerial(char* portname, int baud)
{
portname = strtok(portname, "\r");
@@ -93,6 +121,7 @@ void LEDStripController::InitializeSerial(char* portname, int baud)
baud_rate = baud;
serialport = new serial_port(port_name.c_str(), baud_rate);
udpport = NULL;
i2cport = NULL;
}
void LEDStripController::InitializeUDP(char * clientname, char * port)
@@ -102,6 +131,7 @@ void LEDStripController::InitializeUDP(char * clientname, char * port)
udpport = new net_port(client_name.c_str(), port_name.c_str());
serialport = NULL;
i2cport = NULL;
}
std::string LEDStripController::GetLocation()
@@ -114,6 +144,10 @@ std::string LEDStripController::GetLocation()
{
return("UDP: " + client_name + ":" + port_name);
}
else if(i2cport != NULL)
{
return("I2C: " + std::string(i2cport->device_name) + ", Address " + std::to_string(i2c_addr));
}
else
{
return("");
@@ -140,6 +174,10 @@ void LEDStripController::SetLEDs(std::vector<RGBColor> colors)
case LED_PROTOCOL_TPM2:
SetLEDsTPM2(colors);
break;
case LED_PROTOCOL_BASIC_I2C:
SetLEDsBasicI2C(colors);
break;
}
}
@@ -318,3 +356,51 @@ void LEDStripController::SetLEDsTPM2(std::vector<RGBColor> colors)
delete[] serial_buf;
}
void LEDStripController::SetLEDsBasicI2C(std::vector<RGBColor> colors)
{
unsigned char serial_buf[30];
/*-------------------------------------------------------------*\
| Basic I2C Protocol |
| |
| Packet size: At most 32 bytes (SMBus block size) |
| |
| Packet is in RGBRGBRGB... format, also provide start index |
\*-------------------------------------------------------------*/
unsigned char index = 0;
unsigned char offset = 0;
for(unsigned int color_idx = 0; color_idx < colors.size(); color_idx++)
{
serial_buf[index + 0] = RGBGetRValue(colors[color_idx]);
serial_buf[index + 1] = RGBGetGValue(colors[color_idx]);
serial_buf[index + 2] = RGBGetBValue(colors[color_idx]);
index += 3;
if(index >= 30)
{
if(i2cport != NULL)
{
i2cport->i2c_smbus_write_i2c_block_data(i2c_addr, offset, 30, serial_buf);
offset += 30;
index = 0;
}
}
}
if(index > 0)
{
if(i2cport != NULL)
{
i2cport->i2c_smbus_write_i2c_block_data(i2c_addr, offset, index, serial_buf);
}
}
if(i2cport != NULL)
{
i2cport->i2c_smbus_write_byte(i2c_addr, 0xFF);
}
}