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Correct what looks like may be typos for SPI interaction. 

Use SPI.writeBytes from Espressif if present.
This commit is contained in:
Kazetsukai 2023-02-28 18:19:17 -05:00
parent 3d41860b43
commit e340b3db6b
1 changed files with 13 additions and 6 deletions
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19
cppsrc/U8x8lib.cpp Normal file → Executable file
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@ -885,6 +885,12 @@ extern "C" uint8_t u8x8_byte_arduino_hw_spi(u8x8_t *u8x8, uint8_t msg, uint8_t a
{
case U8X8_MSG_BYTE_SEND:
#if defined(ESP_PLATFORM)
//T.M.L 2023-02-28: use the block transfer function on ESP, which does not overwrite the buffer.
SPI.writeBytes((uint8_t*)arg_ptr, arg_int);
#else
// 1.6.5 offers a block transfer, but the problem is, that the
// buffer is overwritten with the incoming data
// so it can not be used...
@ -893,11 +899,12 @@ extern "C" uint8_t u8x8_byte_arduino_hw_spi(u8x8_t *u8x8, uint8_t msg, uint8_t a
data = (uint8_t *)arg_ptr;
while( arg_int > 0 )
{
SPI.transfer((uint8_t)*data);
data++;
arg_int--;
SPI.transfer((uint8_t)*data);
data++;
arg_int--;
}
#endif
break;
case U8X8_MSG_BYTE_INIT:
if ( u8x8->bus_clock == 0 ) /* issue 769 */
@ -920,11 +927,11 @@ extern "C" uint8_t u8x8_byte_arduino_hw_spi(u8x8_t *u8x8, uint8_t msg, uint8_t a
#if defined(ESP_PLATFORM) || defined(ARDUINO_ARCH_ESP32)
/* ESP32 has the following begin: SPI.begin(int8_t sck=SCK, int8_t miso=MISO, int8_t mosi=MOSI, int8_t ss=-1); */
/* not sure about ESP8266 */
if ( u8x8->pins[U8X8_PIN_I2C_CLOCK] != U8X8_PIN_NONE && u8x8->pins[U8X8_PIN_I2C_DATA] != U8X8_PIN_NONE )
if ( u8x8->pins[U8X8_PIN_SPI_CLOCK] != U8X8_PIN_NONE && u8x8->pins[U8X8_PIN_SPI_DATA] != U8X8_PIN_NONE )
{
/* SPI.begin(int8_t sck=SCK, int8_t miso=MISO, int8_t mosi=MOSI, int8_t ss=-1); */
/* actually MISO is not used, but what else could be used here??? */
SPI.begin(u8x8->pins[U8X8_PIN_I2C_CLOCK], MISO, u8x8->pins[U8X8_PIN_I2C_DATA]);
SPI.begin(u8x8->pins[U8X8_PIN_SPI_CLOCK], MISO, u8x8->pins[U8X8_PIN_SPI_DATA]);
}
else
{