Most of the I2C work completed, now need to review the low-level I2C code.

This commit is contained in:
Jonathan Naylor 2020-11-23 14:24:14 +00:00
parent 112a136060
commit 6c8cf7a838
10 changed files with 133 additions and 16 deletions

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@ -146,10 +146,11 @@ extern CIO io;
#if defined(MODE_OLED)
extern CI2COLED oled;
extern CI2CPort i2C3;
#endif
#if defined(I2C_REPEATER)
extern CI2CPort i2c1;
extern CI2CPort i2C1;
#endif
#if defined(MODE_DSTAR)

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@ -21,6 +21,7 @@
#if defined(MODE_OLED)
#include "I2COLED.h"
#include "I2CPort.h"
#include "Globals.h"
@ -304,7 +305,6 @@ const uint8_t FONT[] = {
CI2COLED::CI2COLED() :
m_i2c(3U),
m_oledBuffer(NULL)
{
m_oledBuffer = new uint8_t[OLED_BUFFER_SIZE];
@ -314,7 +314,7 @@ m_oledBuffer(NULL)
bool CI2COLED::init()
{
bool ret = m_i2c.init();
bool ret = i2C3.init();
if (!ret)
return false;
@ -409,7 +409,7 @@ void CI2COLED::sendCommand(uint8_t c0, uint8_t c1, uint8_t c2)
buff[4U] = c2;
// Write Data on I2C
m_i2c.write(buff, 5U);
i2C3.write(buff, 5U);
}
void CI2COLED::sendCommand(uint8_t c0, uint8_t c1)
@ -422,7 +422,7 @@ void CI2COLED::sendCommand(uint8_t c0, uint8_t c1)
buff[3U] = c1;
// Write Data on I2C
m_i2c.write(buff, 4U);
i2C3.write(buff, 4U);
}
void CI2COLED::sendCommand(uint8_t c)
@ -434,7 +434,7 @@ void CI2COLED::sendCommand(uint8_t c)
buff[2U] = c;
// Write Data on I2C
m_i2c.write(buff, 3U);
i2C3.write(buff, 3U);
}
void CI2COLED::sendData(const uint8_t* data, uint16_t length)
@ -445,8 +445,8 @@ void CI2COLED::sendData(const uint8_t* data, uint16_t length)
buff[1U] = SSD_Data_Mode;
// Write Data on I2C
m_i2c.write(buff, 2U);
m_i2c.write(data, length);
i2C3.write(buff, 2U);
i2C3.write(data, length);
}
void CI2COLED::clear()

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@ -25,8 +25,6 @@
#include <cstdint>
#include "I2CPort.h"
class CI2COLED {
public:
CI2COLED();
@ -36,7 +34,6 @@ public:
void setMode(int state);
private:
CI2CPort m_i2c;
uint8_t* m_oledBuffer;
void write(const char* text);

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@ -1,3 +1,4 @@
/*
* Copyright (C) 2020 by Jonathan Naylor G4KLX
*
@ -30,9 +31,54 @@
#include "stm32f7xx_i2c.h"
#endif
#include "Globals.h"
const uint32_t I2C_CLK_FREQ = 100000U; // XXX FIXME
const uint16_t I2C_ADDR = 0U; // XXX FIXME
extern "C" {
#if defined(I2C_REPEATER)
void I2C1_EV_IRQHandler(void)
{
i2C1.eventHandler();
}
void I2C1_ER_IRQHandler(void)
{
if (I2C_GetITStatus(I2C1, I2C_IT_AF))
I2C_ClearITPendingBit(I2C1, I2C_IT_AF);
}
#endif
#ifdef notdef
void I2C2_EV_IRQHandler(void)
{
i2C2.eventHandler();
}
void I2C2_ER_IRQHandler(void)
{
if (I2C_GetITStatus(I2C2, I2C_IT_AF))
I2C_ClearITPendingBit(I2C2, I2C_IT_AF);
}
#endif
#if defined(MODE_OLED)
void I2C3_EV_IRQHandler(void)
{
i2C3.eventHandler();
}
void I2C3_ER_IRQHandler(void)
{
if (I2C_GetITStatus(I2C3, I2C_IT_AF))
I2C_ClearITPendingBit(I2C3, I2C_IT_AF);
}
#endif
}
CI2CPort::CI2CPort(uint8_t n) :
m_n(n),
m_ok(false),
@ -129,6 +175,75 @@ uint8_t CI2CPort::write(const uint8_t* data, uint8_t length)
return 0U;
}
void CI2CPort::eventHandler()
{
I2C_TypeDef* i2CPort = NULL;
switch (m_n) {
case 1U:
i2CPort = I2C1;
break;
case 2U:
i2CPort = I2C2;
break;
case 3U:
i2CPort = I2C3;
break;
default:
return;
}
uint32_t event = I2C_GetLastEvent(i2CPort);
switch (event) {
case I2C_EVENT_SLAVE_TRANSMITTER_ADDRESS_MATCHED:
case I2C_EVENT_SLAVE_BYTE_TRANSMITTED:
if (fifoLevel() > 0U) {
I2C_SendData(i2CPort, m_fifo[m_fifoTail]);
m_fifoTail++;
if (m_fifoTail >= I2C_TX_FIFO_SIZE)
m_fifoTail = 0U;
} else
I2C_SendData(i2CPort, 0U);
break;
case I2C_EVENT_SLAVE_STOP_DETECTED:
clearFlag();
break;
}
}
void CI2CPort::clearFlag()
{
I2C_TypeDef* i2CPort = NULL;
switch (m_n) {
case 1U:
i2CPort = I2C1;
break;
case 2U:
i2CPort = I2C2;
break;
case 3U:
i2CPort = I2C3;
break;
default:
return;
}
// Clear ADDR flag
while((i2CPort->SR1 & I2C_SR1_ADDR) == I2C_SR1_ADDR) {
i2CPort->SR1;
i2CPort->SR2;
}
// Clear STOPF flag
while((i2CPort->SR1 & I2C_SR1_STOPF) == I2C_SR1_STOPF) {
i2CPort->SR1;
i2CPort->CR1 |= 0x1;
}
}
uint16_t CI2CPort::fifoLevel()
{
uint32_t tail = m_fifoTail;

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@ -36,6 +36,8 @@ public:
uint8_t write(const uint8_t* data, uint8_t length);
void eventHandler();
private:
uint8_t m_n;
bool m_ok;
@ -45,6 +47,7 @@ private:
uint16_t fifoLevel();
bool fifoPut(uint8_t next);
void clearFlag();
};
#endif

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@ -196,7 +196,7 @@ void CIO::initInt()
#endif
#if defined(I2C_REPEATER)
i2c1.init();
i2C1.init();
#endif
}

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@ -43,10 +43,11 @@ bool m_dcd = false;
#if defined(MODE_OLED)
CI2COLED oled;
CI2CPort i2C3(3U);
#endif
#if defined(I2C_REPEATER)
CI2CPort i2c1(1U);
CI2CPort i2C1(1U);
#endif
#if defined(MODE_DSTAR)

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@ -40,6 +40,7 @@ bool m_dcd = false;
#if defined(MODE_OLED)
CI2COLED oled;
CI2CPort i2C3(3U);
#endif
#if defined(I2C_REPEATER)

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@ -1313,7 +1313,7 @@ void CSerialPort::processMessage(uint8_t type, const uint8_t* buffer, uint16_t l
#if defined(I2C_REPEATER)
case MMDVM_I2C_DATA: {
err = i2c1.write(buffer, length);
err = i2C1.write(buffer, length);
if (err != 0U) {
DEBUG2("Received invalid I2C data", err);
sendNAK(err);

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@ -19,7 +19,6 @@
#if !defined(VERSION_H)
#define VERSION_H
#define VERSION "20201120"
#define VERSION "20201123"
#endif