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127 lines
2.1 KiB
127 lines
2.1 KiB
#include "max7219.h"
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void max7219_init(
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max7219_t *display,
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spi_ch_t *spi_ch)
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{
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display->spiCH = spi_ch;
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}
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void h
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void max7219_testDisplay(
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max7219_t *display,
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uint8_t logic)
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{
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spiWriteReg(display->spiCH,0x0F, (logic) ? 0x01 : 0x00);
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}
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void max7219_shutdownDiaply(
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max7219_t *display,
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uint8_t logic)
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{
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spiWriteReg(display->spiCH,0x0C, (logic) ? 0x00 : 0x01);
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}
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void max7219_setDecodeMode(
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max7219_t *display,
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max7219_decodeMode_t dmode)
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{
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spiWriteReg(display->spiCH,0x09,(uint8_t) dmode);
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}
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void max7219_setIntensity(
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max7219_t *display,
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uint8_t intensity)
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{
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spiWriteReg(display->spiCH, 0x0A, intensity & 0x0F);
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}
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void max7219_setScanLimit(
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max7219_t *display,
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max7219_scanLimit_t slimit)
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{
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spiWriteReg(display->spiCH, 0x0B, ((uint8_t) slimit) & 0x0F);
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}
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void max7219_setAllLEDsOff(
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max7219_t *display)
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{
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uint8_t i;
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for(i = 0; i < 9; i++) {
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spiWriteReg(display->spiCH, i, 0x00);
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}
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}
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void max7219_ledMatrixSetLED(
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max7219_t *display,
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uint8_t row,
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uint8_t col)
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{
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uint8_t val = 0xAE;
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row = (row & 0x07) + 1;
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col = 1 << (col & 0x07);
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spiWriteReg(display->spiCH, row,col);
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}
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void max7219_rawWrite(
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max7219_t *display,
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uint8_t reg,
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uint8_t data)
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{
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spiWriteReg(display->spiCH, reg, data);
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}
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void max7219_printLedMatrix(
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max7219_t *display,
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uint8_t matrix[])
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{
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uint8_t i = 0;
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for(i = 0; i < 8; i ++) {
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spiWriteReg(display->spiCH, i+1, matrix[i]);
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}
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}
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void max7219_ledMatrixUnsetLED(
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max7219_t *display,
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uint8_t row,
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uint8_t col)
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{
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row = (row & 0x07) + 1;
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col = 1 << (col & 0x07);
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// TODO: find out how to turn off LED
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spiWriteReg(display->spiCH, row,col+1);
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}
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#if 0
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// daysichained matrix
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typedef struct{
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spi_ch_t *spiCH;
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uint8_t nDevices;
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}max7219_dm_t;
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void max7219_dm_write(
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max7219_dm_t *matrix,
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uint8_t **data)
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{
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uint8_t i = 0;
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uint8_t j = 0;
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// TODO: Test it out
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for(i = 0; i < 8; i++) {
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pinWrite(matrix->spiCH->pin, 0);
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for(j = 0; j < matrix->nDevices; j++) {
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spiTrx8BitPolling(matrix->spiCH->spi, i+1); // reg
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spiTrx8BitPolling(matrix->spiCH->spi, data[j][i]);
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}
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pinWrite(matrix->spiCH->pin, 1);
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}
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}
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#endif
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