Implement basic tsb protocol for information command

tsb/main.cpp

@@ -1,6 +1,102 @@
 #include "clock.hpp"
 
+#include "uart/uart.hpp"
+
+constexpr auto READ_FLASH_CMD = 'f';
+constexpr auto WRITE_FLASH_CMD = 'F';
+constexpr auto READ_EEPROM_CMD = 'e';
+constexpr auto WRITE_EEPROM_CMD = 'E';
+constexpr auto READ_USERDATA_CMD = 'c';
+constexpr auto WRITE_USERDATA_CMD = 'C';
+constexpr auto REQUEST_CMD = '?';
+constexpr auto CONFIRM_CMD = '!';
+constexpr auto AUTO_BAUDING_CMD = '@';
+
+using uart_interface = uart::Hardware0<uart::Config<38400>, uart::Driven::BLOCKING>;
+
+enum class State {
+	WAITING,
+	ACTIVE,
+};
+
+struct DeviceInfo {
+	char name[3] = {'T', 'S', 'B'};
+	uint8_t date[2] = {0x1a, 0x1f};
+	uint8_t status = 0xf0;
+	uint8_t signature[3] = {0x1e, 0x95, 0x0f};
+	uint8_t pageSize = 0x40;
+	uint16_t flashSize = 0x3ec0;
+	uint16_t eepromSize = 0x03ff;
+};
+
+struct UserData {
+	uint16_t jumpAddress = 0xAAAA;
+	uint8_t timeout = 0x21;
+};
+
+static inline void sendDeviceInfo()
+{
+	uart::Uart<uart_interface> serial;
+
+	constexpr DeviceInfo deviceInfo;
+	constexpr UserData userData;
+
+	for (uint8_t i = 0; i < sizeof(deviceInfo); ++i) {
+		serial.txByte(*(reinterpret_cast<const uint8_t *>(&deviceInfo) + i));
+	}
+
+	for (uint8_t i = 0; i < sizeof(userData); ++i) {
+		serial.txByte(*(reinterpret_cast<const uint8_t *>(&userData) + i));
+	}
+}
+
+static uint8_t g_lastPage[128] = {};
+
+static inline void sendUserData()
+{
+	uart::Uart<uart_interface> serial;
+
+	for (uint8_t i = 0; i < sizeof(g_lastPage); ++i) {
+		serial.txByte(*(reinterpret_cast<const uint8_t *>(&g_lastPage) + i));
+	}
+}
+
+static inline void sendConfirm()
+{
+	uart::Uart<uart_interface> serial;
+	serial.txByte(CONFIRM_CMD);
+}
+
 int main()
 {
+	uart::Uart<uart_interface> serial;
+	serial.init();
+
+	State state = State::WAITING;
+
+	uint8_t receivedByte = 0;
+	uint8_t autoBaudingCounter = 0;
+
+	while (true) {
+		if (serial.rxByte(receivedByte)) {
+			if (state == State::WAITING) {
+				if (receivedByte == AUTO_BAUDING_CMD) {
+					++autoBaudingCounter;
+				}
+				if (autoBaudingCounter == 3) {
+					autoBaudingCounter = 0;
+					state = State::ACTIVE;
+					sendDeviceInfo();
+				}
+			} else if (state == State::ACTIVE) {
+				if (receivedByte == READ_USERDATA_CMD) {
+					sendUserData();
+					sendConfirm();
+					state = State::WAITING;
+				}
+			}
+		}
+	}
+
 	return 0;
 }