Get FolgerTech i3-2020 working again with 32-bit platforms (#7944)
Setup FolgerTech i3-2020 Configuration files as a reference platform for 32-Bit work. Also fix MAX7219 debug lights on 32-bit platforms.
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@ -63,18 +63,38 @@ static uint8_t LEDs[8] = { 0 };
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void Max7219_PutByte(uint8_t data) {
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for (uint8_t i = 8; i--;) {
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WRITE(MAX7219_CLK_PIN, LOW); // tick
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WRITE(MAX7219_DIN_PIN, (data & 0x80) ? HIGH : LOW); // send 1 or 0 based on data bit
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WRITE(MAX7219_CLK_PIN, HIGH); // tock
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#ifdef CPU_32_BIT // The 32-bit processors are so fast, a small delay in the code is needed
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// to let the signal wires stabilize.
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WRITE(MAX7219_CLK_PIN, LOW); // tick
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delayMicroseconds(5);
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WRITE(MAX7219_DIN_PIN, (data & 0x80) ? HIGH : LOW); // send 1 or 0 based on data bit
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delayMicroseconds(5);
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WRITE(MAX7219_CLK_PIN, HIGH); // tock
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delayMicroseconds(5);
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#else
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WRITE(MAX7219_CLK_PIN, LOW); // tick
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WRITE(MAX7219_DIN_PIN, (data & 0x80) ? HIGH : LOW); // send 1 or 0 based on data bit
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WRITE(MAX7219_CLK_PIN, HIGH); // tock
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#endif
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data <<= 1;
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}
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}
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void Max7219(const uint8_t reg, const uint8_t data) {
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WRITE(MAX7219_LOAD_PIN, LOW); // begin
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#ifdef CPU_32_BIT // The 32-bit processors are so fast, a small delay in the code is needed
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delayMicroseconds(5); // to let the signal wires stabilize.
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#endif
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Max7219_PutByte(reg); // specify register
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Max7219_PutByte(data); // put data
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#ifdef CPU_32_BIT
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delayMicroseconds(5);
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#endif
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WRITE(MAX7219_LOAD_PIN, LOW); // and tell the chip to load the data
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#ifdef CPU_32_BIT
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delayMicroseconds(5);
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#endif
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WRITE(MAX7219_LOAD_PIN, HIGH);
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}
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@ -135,6 +155,7 @@ void Max7219_init() {
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SET_OUTPUT(MAX7219_CLK_PIN);
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OUT_WRITE(MAX7219_LOAD_PIN, HIGH);
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delay(1);
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//initiation of the max 7219
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Max7219(max7219_reg_scanLimit, 0x07);
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@ -187,9 +208,13 @@ void Max7219_init() {
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void Max7219_idle_tasks() {
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#if ENABLED(MAX7219_DEBUG_PRINTER_ALIVE)
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static int debug_cnt = 0;
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if (debug_cnt++ > 100) {
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Max7219_LED_Toggle(7, 7);
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debug_cnt = 0;
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#ifdef CPU_32_BIT
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if (debug_cnt++ > 400) {
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#else
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if (debug_cnt++ > 100) {
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#endif
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Max7219_LED_Toggle(7, 7);
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debug_cnt = 0;
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}
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#endif
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