Basic support for JM60 keyboard

This adds basic support for JM60 RGB PCB that was sold
by KBDfans https://kbdfans.myshopify.com/
https://www.aliexpress.com/store/product/JM60-RGB60-Custom-mechanical-keyboard-PCB-ANSI/2230037_32810956675.html

No support for RGB Backlight yet.

1 files changed, 128 insertions, 0 deletions

diff --git a/keyboards/jm60/matrix.c b/keyboards/jm60/matrix.c
new file mode 100644
index 000000000..8430a5843
--- /dev/null
+++ b/keyboards/jm60/matrix.c
@@ -0,0 +1,128 @@
+#include <stdint.h>
+#include <stdbool.h>
+#include <string.h>
+#include "hal.h"
+#include "timer.h"
+#include "wait.h"
+#include "print.h"
+#include "matrix.h"
+
+
+/*
+ * JM60
+ * Column pins are input with internal pull-down. Row pins are output and strobe with high.
+ * Key is high or 1 when it turns on.
+ *
+ *     col: { PTA15, PTC10, PTC11, PTC12, PTD2, PTB3, PTB4, PTB5, PTB6, PTB7, PTB8, PTB9, PTA2, PTA3 }
+ *     row: { PTB11, PTB10, PTB2, PTB1, PTB0}
+ */
+/* matrix state(1:on, 0:off) */
+static matrix_row_t matrix[MATRIX_ROWS];
+static matrix_row_t matrix_debouncing[MATRIX_ROWS];
+static bool debouncing = false;
+static uint16_t debouncing_time = 0;
+
+
+void matrix_init(void)
+{
+//debug_matrix = true;
+    /* Column(sense) */
+    palSetPadMode(GPIOA, 15,  PAL_MODE_INPUT_PULLDOWN);
+    palSetPadMode(GPIOC, 10,  PAL_MODE_INPUT_PULLDOWN);
+    palSetPadMode(GPIOC, 11,  PAL_MODE_INPUT_PULLDOWN);
+    palSetPadMode(GPIOC, 12,  PAL_MODE_INPUT_PULLDOWN);
+    palSetPadMode(GPIOD, 2,  PAL_MODE_INPUT_PULLDOWN);
+    palSetPadMode(GPIOB, 3,  PAL_MODE_INPUT_PULLDOWN);
+    palSetPadMode(GPIOB, 4,  PAL_MODE_INPUT_PULLDOWN);
+    palSetPadMode(GPIOB, 5,  PAL_MODE_INPUT_PULLDOWN);
+    palSetPadMode(GPIOB, 6,  PAL_MODE_INPUT_PULLDOWN);
+    palSetPadMode(GPIOB, 7,  PAL_MODE_INPUT_PULLDOWN);
+    palSetPadMode(GPIOB, 8,  PAL_MODE_INPUT_PULLDOWN);
+    palSetPadMode(GPIOB, 9,  PAL_MODE_INPUT_PULLDOWN);
+    palSetPadMode(GPIOA, 2,  PAL_MODE_INPUT_PULLDOWN);
+    palSetPadMode(GPIOA, 3,  PAL_MODE_INPUT_PULLDOWN);
+
+    /* Row(strobe) */
+    palSetPadMode(GPIOB, 11,  PAL_MODE_OUTPUT_PUSHPULL);
+    palSetPadMode(GPIOB, 10,  PAL_MODE_OUTPUT_PUSHPULL);
+    palSetPadMode(GPIOB, 2, PAL_MODE_OUTPUT_PUSHPULL);
+    palSetPadMode(GPIOB, 1, PAL_MODE_OUTPUT_PUSHPULL);
+    palSetPadMode(GPIOB, 0,  PAL_MODE_OUTPUT_PUSHPULL);
+
+    memset(matrix, 0, MATRIX_ROWS);
+    memset(matrix_debouncing, 0, MATRIX_ROWS);
+}
+
+uint8_t matrix_scan(void)
+{
+    for (int row = 0; row < MATRIX_ROWS; row++) {
+        matrix_row_t data = 0;
+
+        // strobe row
+        switch (row) {
+            case 0: palSetPad(GPIOB, 11);    break;
+            case 1: palSetPad(GPIOB, 10);    break;
+            case 2: palSetPad(GPIOB, 2);   	break;
+            case 3: palSetPad(GPIOB, 1);   break;
+            case 4: palSetPad(GPIOB, 0);    break;
+        }
+
+        wait_us(20); // need wait to settle pin state
+
+        // read col data: { PTA15, PTC10, PTC11, PTC12, PTD2, PTB3, PTB4, PTB5, PTB6, PTB7, PTB8, PTB9, PTA2, PTA3 }
+        data = ((palReadPort(GPIOA) & 0x8000UL) >> 15) |	// 0
+        	   ((palReadPort(GPIOC) & 0x1C00UL) >> 9) |		// 1, 2, 3
+			   ((palReadPort(GPIOD) & 0x0004UL) << 2) |		// 4
+			   ((palReadPort(GPIOB) & 0x03F8UL) << 2) |		// 5, 6, 7, 8, 9, 10, 11
+			   ((palReadPort(GPIOA) & 0x000CUL) << 10);    // 12, 13
+
+        // un-strobe row
+        switch (row) {
+        	case 0: palClearPad(GPIOB, 11);    break;
+        	case 1: palClearPad(GPIOB, 10);    break;
+        	case 2: palClearPad(GPIOB, 2);	  break;
+        	case 3: palClearPad(GPIOB, 1);   break;
+        	case 4: palClearPad(GPIOB, 0);    break;
+        }
+
+        if (matrix_debouncing[row] != data) {
+            matrix_debouncing[row] = data;
+            debouncing = true;
+            debouncing_time = timer_read();
+        }
+    }
+
+    if (debouncing && timer_elapsed(debouncing_time) > DEBOUNCE) {
+        for (int row = 0; row < MATRIX_ROWS; row++) {
+            matrix[row] = matrix_debouncing[row];
+        }
+        debouncing = false;
+    }
+    return 1;
+}
+
+bool matrix_is_on(uint8_t row, uint8_t col)
+{
+    return (matrix[row] & (1<<col));
+}
+
+matrix_row_t matrix_get_row(uint8_t row)
+{
+    return matrix[row];
+}
+
+void matrix_print(void)
+{
+    xprintf("\nr/c 01234567\n");
+    for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
+        xprintf("%X0: ", row);
+        matrix_row_t data = matrix_get_row(row);
+        for (int col = 0; col < MATRIX_COLS; col++) {
+            if (data & (1<<col))
+                xprintf("1");
+            else
+                xprintf("0");
+        }
+        xprintf("\n");
+    }
+}