Clueboard 66% Hotswap Support (#5204)

* Initial Clueboard 66% arm support

* Fix LAYOUT_66_ansi

* wip

* Bring this branch up to date with led_matrix

* Get Clueboard 66% hotswap working with led_matrix

* stm32 cleanup

* Fix compiling for clueboard 66% hotswap prototype

* Reduce the size of the prototype firmware

1 files changed, 160 insertions, 0 deletions

diff --git a/keyboards/clueboard/66_hotswap/gen1/matrix.c b/keyboards/clueboard/66_hotswap/gen1/matrix.c
new file mode 100644
index 000000000..c3e59b564
--- /dev/null
+++ b/keyboards/clueboard/66_hotswap/gen1/matrix.c
@@ -0,0 +1,160 @@
+#include <stdint.h>
+#include <stdbool.h>
+#include <string.h>
+#include "hal.h"
+#include "timer.h"
+#include "wait.h"
+#include "printf.h"
+#include "backlight.h"
+#include "matrix.h"
+#include "action.h"
+#include "keycode.h"
+#include <string.h>
+
+/*
+ * #define MATRIX_ROW_PINS { PB11, PA6, PA3, PA2, PA1, PB5, PB6, PC15, PC14, PC13 }
+ * #define MATRIX_COL_PINS { PB10, PB2, PB1, PB0, PA7, PB4, PB3, PB7 }
+ */
+/* matrix state(1:on, 0:off) */
+static matrix_row_t matrix[MATRIX_ROWS];
+static matrix_row_t matrix_debouncing[MATRIX_COLS];
+static bool debouncing = false;
+static uint16_t debouncing_time = 0;
+
+__attribute__ ((weak))
+void matrix_init_user(void) {}
+
+__attribute__ ((weak))
+void matrix_scan_user(void) {}
+
+__attribute__ ((weak))
+void matrix_init_kb(void) {
+  matrix_init_user();
+}
+
+__attribute__ ((weak))
+void matrix_scan_kb(void) {
+  matrix_scan_user();
+}
+
+void matrix_init(void) {
+    printf("matrix init\n");
+    //debug_matrix = true;
+
+    // actual matrix setup
+    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);
+    palSetPadMode(GPIOA, 7,  PAL_MODE_OUTPUT_PUSHPULL);
+    palSetPadMode(GPIOB, 4,  PAL_MODE_OUTPUT_PUSHPULL);
+    palSetPadMode(GPIOB, 3,  PAL_MODE_OUTPUT_PUSHPULL);
+    palSetPadMode(GPIOB, 7,  PAL_MODE_OUTPUT_PUSHPULL);
+
+    palSetPadMode(GPIOB, 11, PAL_MODE_INPUT_PULLDOWN);
+    palSetPadMode(GPIOA, 6,  PAL_MODE_INPUT_PULLDOWN);
+    palSetPadMode(GPIOA, 3,  PAL_MODE_INPUT_PULLDOWN);
+    palSetPadMode(GPIOA, 2, PAL_MODE_INPUT_PULLDOWN);
+    palSetPadMode(GPIOA, 1, PAL_MODE_INPUT_PULLDOWN);
+    palSetPadMode(GPIOB, 5, PAL_MODE_INPUT_PULLDOWN);
+    palSetPadMode(GPIOB, 6, PAL_MODE_INPUT_PULLDOWN);
+    palSetPadMode(GPIOC, 15,  PAL_MODE_INPUT_PULLDOWN);
+    palSetPadMode(GPIOC, 14,  PAL_MODE_INPUT_PULLDOWN);
+    palSetPadMode(GPIOC, 13,  PAL_MODE_INPUT_PULLDOWN);
+
+    memset(matrix, 0, MATRIX_ROWS * sizeof(matrix_row_t));
+    memset(matrix_debouncing, 0, MATRIX_COLS * sizeof(matrix_row_t));
+
+    matrix_init_quantum();
+}
+
+uint8_t matrix_scan(void) {
+    // actual matrix
+    for (int col = 0; col < MATRIX_COLS; col++) {
+        matrix_row_t data = 0;
+
+        // strobe col { PB10, PB2, PB1, PB0, PA7, PB4, PB3, PB7 }
+        switch (col) {
+            case 0: palSetPad(GPIOB, 10); break;
+            case 1: palSetPad(GPIOB, 2); break;
+            case 2: palSetPad(GPIOB, 1); break;
+            case 3: palSetPad(GPIOB, 0); break;
+            case 4: palSetPad(GPIOA, 7); break;
+            case 5: palSetPad(GPIOB, 4); break;
+            case 6: palSetPad(GPIOB, 3); break;
+            case 7: palSetPad(GPIOB, 7); break;
+        }
+
+        // need wait to settle pin state
+        wait_us(20);
+
+        // read row data { PB11, PA6, PA3, PA2, PA1, PB5, PB6, PC15, PC14, PC13 }
+        data = (
+            (palReadPad(GPIOB, 11) << 0 ) |
+            (palReadPad(GPIOA, 6)  << 1 ) |
+            (palReadPad(GPIOA, 3)  << 2 ) |
+            (palReadPad(GPIOA, 2) << 3 ) |
+            (palReadPad(GPIOA, 1) << 4 ) |
+            (palReadPad(GPIOB, 5) << 5 ) |
+            (palReadPad(GPIOB, 6) << 6 ) |
+            (palReadPad(GPIOC, 15)  << 7 ) |
+            (palReadPad(GPIOC, 14)  << 8 ) |
+            (palReadPad(GPIOC, 13)  << 9 )
+        );
+
+        // unstrobe  col { B11, B10, B2, B1, A7, B0 }
+        switch (col) {
+            case 0: palClearPad(GPIOB, 10); break;
+            case 1: palClearPad(GPIOB, 2); break;
+            case 2: palClearPad(GPIOB, 1); break;
+            case 3: palClearPad(GPIOB, 0); break;
+            case 4: palClearPad(GPIOA, 7); break;
+            case 5: palClearPad(GPIOB, 4); break;
+            case 6: palClearPad(GPIOB, 3); break;
+            case 7: palClearPad(GPIOB, 7); break;
+        }
+
+        if (matrix_debouncing[col] != data) {
+            matrix_debouncing[col] = data;
+            debouncing = true;
+            debouncing_time = timer_read();
+        }
+    }
+
+    if (debouncing && timer_elapsed(debouncing_time) > DEBOUNCE) {
+        for (int row = 0; row < MATRIX_ROWS; row++) {
+            matrix[row] = 0;
+            for (int col = 0; col < MATRIX_COLS; col++) {
+                matrix[row] |= ((matrix_debouncing[col] & (1 << row) ? 1 : 0) << col);
+            }
+        }
+        debouncing = false;
+    }
+
+    matrix_scan_quantum();
+
+    return 1;
+}
+
+bool matrix_is_on(uint8_t row, uint8_t col) {
+    return (matrix[row] & (1<<col));
+}
+
+matrix_row_t matrix_get_row(uint16_t row) {
+    return matrix[row];
+}
+
+void matrix_print(void) {
+    printf("\nr/c 01234567\n");
+    for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
+        printf("%X0: ", row);
+        matrix_row_t data = matrix_get_row(row);
+        for (int col = 0; col < MATRIX_COLS; col++) {
+            if (data & (1<<col))
+                printf("1");
+            else
+                printf("0");
+        }
+        printf("\n");
+    }
+}