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Initial I2C driver code.

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This commit is contained in:
Jonathan Naylor
2020-11-18 14:06:18 +00:00
parent 53b5659639
commit 2285f9bd82
11 changed files with 155 additions and 31 deletions
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SerialPort.cpp
+19 -23
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@@ -127,6 +127,10 @@ const uint8_t PROTOCOL_VERSION = 2U;
const int MAX_SERIAL_DATA = 250;
const uint16_t MAX_SERIAL_COUNT = 100U;
// I2C types
const uint8_t I2C_COMMAND = 0x00U;
const uint8_t I2C_DATA = 0x40U;
CSerialPort::CSerialPort() :
m_buffer(),
m_ptr(0U),
@@ -134,8 +138,7 @@ m_len(0U),
m_debug(false),
m_serialData(),
m_lastSerialAvail(0),
m_lastSerialAvailCount(0U),
m_i2CData()
m_lastSerialAvailCount(0U)
{
}
@@ -852,9 +855,6 @@ void CSerialPort::start()
#if defined(SERIAL_REPEATER)
beginInt(3U, 9600);
#endif
#if defined(I2C_REPEATER)
beginInt(10U, 9600);
#endif
}
void CSerialPort::process()
@@ -939,22 +939,6 @@ void CSerialPort::process()
m_lastSerialAvailCount = 0U;
}
#endif
#if defined(I2C_REPEATER)
// Write any outgoing serial data
uint16_t i2CSpace = m_i2CData.getData();
if (i2CSpace > 0U) {
int avail = availableForWriteInt(10U);
if (avail < i2CSpace)
i2CSpace = avail;
for (uint16_t i = 0U; i < i2CSpace; i++) {
uint8_t c = 0U;
m_i2CData.get(c);
writeInt(10U, &c, 1U);
}
}
#endif
}
void CSerialPort::processMessage(uint8_t type, const uint8_t* buffer, uint16_t length)
@@ -1332,8 +1316,20 @@ void CSerialPort::processMessage(uint8_t type, const uint8_t* buffer, uint16_t l
#if defined(I2C_REPEATER)
case MMDVM_I2C_DATA: {
for (uint16_t i = 0U; i < length; i++)
m_i2CData.put(buffer[i]);
uint8_t type = buffer[0U];
uint8_t err = 4U;
switch (type) {
case I2C_COMMAND:
err = i2C1.writeCommand(buffer + 1U, length - 1U);
break;
case I2C_DATA:
err = i2C1.writeData(buffer + 1U, length - 1U);
break;
}
if (err != 0U) {
DEBUG2("Received invalid I2C data", err);
sendNAK(err);
}
}
break;
#endif