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Refactor SSD1306 initialisation to support different initialisation sequences.

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To support a HAL Display driver, the SSD1306 driver can be created (new) and then the I2C address assigned explicitly in the begin() call.  The original approach of looking for the I2C device address has also been retained in a different constructor.
This commit is contained in:
Neil McKechnie 2023-02-07 15:07:29 +00:00
parent 9435869ee3
commit 278a9c52a6
1 changed files with 8 additions and 4 deletions
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12
SSD1306Ascii.cpp
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@ -144,7 +144,10 @@ const uint8_t FLASH SSD1306AsciiWire::SH1106_132x64init[] = {
//------------------------------------------------------------------------------ //------------------------------------------------------------------------------
// Constructor // Constructor
SSD1306AsciiWire::SSD1306AsciiWire() {} SSD1306AsciiWire::SSD1306AsciiWire() {
I2CManager.begin();
I2CManager.setClock(400000L); // Set max supported I2C speed
}
// CS auto-detect and configure constructor // CS auto-detect and configure constructor
SSD1306AsciiWire::SSD1306AsciiWire(int width, int height) { SSD1306AsciiWire::SSD1306AsciiWire(int width, int height) {
@ -193,7 +196,7 @@ bool SSD1306AsciiWire::begin(I2CAddress address, int width, int height) {
return false; return false;
} }
// Device found // Device found
DIAG(F("%dx%d OLED display configured on I2C:x%x"), m_displayWidth, m_displayHeight, (uint8_t)m_i2cAddr); DIAG(F("%dx%d OLED display configured on I2C:x%x"), m_displayWidth, m_displayHeight, (int)m_i2cAddr);
clear(); clear();
return true; return true;
} }
@ -203,8 +206,9 @@ void SSD1306AsciiWire::clearNative() {
const int maxBytes = sizeof(blankPixels); // max number of bytes sendable over Wire const int maxBytes = sizeof(blankPixels); // max number of bytes sendable over Wire
for (uint8_t r = 0; r <= m_displayHeight/8 - 1; r++) { for (uint8_t r = 0; r <= m_displayHeight/8 - 1; r++) {
setRowNative(r); // Position at start of row to be erased setRowNative(r); // Position at start of row to be erased
for (uint8_t c = 0; c <= m_displayWidth - 1; c += maxBytes-1) { for (uint8_t c = 0; c <= m_displayWidth - 1; c += maxBytes) {
uint8_t len = min(m_displayWidth-c, maxBytes-1) + 1; uint8_t len = m_displayWidth-c;
if (len > maxBytes) len = maxBytes;
I2CManager.write_P(m_i2cAddr, blankPixels, len); // Write a number of blank columns I2CManager.write_P(m_i2cAddr, blankPixels, len); // Write a number of blank columns
} }
} }