spicetools/games/shared/lcdhandle.cpp

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2024-08-28 15:10:34 +00:00
#include "lcdhandle.h"
#include "util/utils.h"
#include "util/time.h"
// globals
namespace games::shared {
// current state for easy access
bool LCD_ENABLED = false;
std::string LCD_CSM = "USER";
uint8_t LCD_BRI = 27;
uint8_t LCD_CON = 48;
uint8_t LCD_BL = 100;
uint8_t LCD_RED = 137;
uint8_t LCD_GREEN = 132;
uint8_t LCD_BLUE = 132;
}
void games::shared::LCDHandle::answer(std::string s) {
for (auto c : s) {
this->read_buffer.push_back((uint8_t) c);
}
this->read_buffer.push_back('\r');
this->read_buffer.push_back('\n');
}
bool games::shared::LCDHandle::open(LPCWSTR lpFileName) {
if (wcscmp(lpFileName, L"COM1")) {
return false;
}
log_info("lcdhandle", "opened COM1");
LCD_ENABLED = true;
return true;
}
int games::shared::LCDHandle::read(LPVOID lpBuffer, DWORD nNumberOfBytesToRead) {
// check time
if (get_system_milliseconds() < this->read_time_next) {
return 0;
}
// return buffer
if (read_buffer.size()) {
size_t write_count = MIN(nNumberOfBytesToRead, read_buffer.size());
memcpy(lpBuffer, &read_buffer[0], write_count);
read_buffer.erase(read_buffer.begin(), read_buffer.begin() + write_count);
return write_count;
}
// no data
return 0;
}
int games::shared::LCDHandle::write(LPCVOID lpBuffer, DWORD nNumberOfBytesToWrite) {
// check maximum size
if (nNumberOfBytesToWrite >= 256)
nNumberOfBytesToWrite = 255;
// get string
char data[256]{};
memcpy(data, lpBuffer, nNumberOfBytesToWrite);
std::string cmd_frame(data);
// check frame
if (string_begins_with(cmd_frame, "0")) {
// process frame
std::string cmd = cmd_frame.substr(1);
std::vector<std::string> cmd_split;
strsplit(cmd, cmd_split, ' ');
std::string param_in = "";
if (cmd_split.size() > 1) {
param_in = cmd_split[1];
if (string_ends_with(param_in.c_str(), "\r\n")) {
param_in = param_in.substr(0, param_in.size() - 2);
}
if (cmd_split.size() > 2) {
log_warning("lcdhandle", "too many parameters: {}", cmd_frame);
}
}
// get parameter
std::string param_out = "";
try {
if (string_begins_with(cmd_split[0], "MODEL?")) {
//param_out = "SPICE";
} else if (string_begins_with(cmd_split[0], "CSM")) {
LCD_CSM = param_in;
} else if (string_begins_with(cmd_split[0], "BRI")) {
LCD_BRI = std::stoi(param_in);
} else if (string_begins_with(cmd_split[0], "CON")) {
LCD_CON = std::stoi(param_in);
} else if (string_begins_with(cmd_split[0], "BL")) {
LCD_BL = std::stoi(param_in);
} else if (string_begins_with(cmd_split[0], "RED")) {
LCD_RED = std::stoi(param_in);
} else if (string_begins_with(cmd_split[0], "GREEN")) {
LCD_GREEN = std::stoi(param_in);
} else if (string_begins_with(cmd_split[0], "BLUE")) {
LCD_BLUE = std::stoi(param_in);
} else if (string_begins_with(cmd_split[0], "DFLIP")) {
// TODO
} else if (string_begins_with(cmd_split[0], "OFLIP")) {
// TODO
} else {
log_warning("lcdhandle", "unknown cmd: {}", cmd_frame);
}
} catch (std::invalid_argument&) {
log_warning("lcdhandle", "couldn't parse cmd: {}", cmd_frame);
}
// respond
answer(fmt::format("9{} {}", cmd_split[0], param_in));
answer(fmt::format("9OK {}", param_out));
// delay next read by 32ms
read_time_next = get_system_milliseconds() + 32;
}
// log unhandled commands
if (this->read_buffer.empty()) {
log_warning("lcdhandle", "unhandled cmd: {}", cmd_frame);
}
// return all bytes written
return (int) nNumberOfBytesToWrite;
}
int games::shared::LCDHandle::device_io(DWORD dwIoControlCode, LPVOID lpInBuffer, DWORD nInBufferSize,
LPVOID lpOutBuffer, DWORD nOutBufferSize) {
return -1;
}
bool games::shared::LCDHandle::close() {
log_info("lcdhandle", "closed COM1");
LCD_ENABLED = false;
return true;
}