atmel-samd: Add SDIO SD card interface

1 files changed, 40 insertions, 0 deletions

diff --git a/tools/mksdiodata.py b/tools/mksdiodata.py
new file mode 100755
index 000000000..0cce3819f
--- /dev/null
+++ b/tools/mksdiodata.py
@@ -0,0 +1,40 @@
+#!/usr/bin/python3
+
+def defines(name, function):
+    print(f'pin_function_t {name} [] = {{')
+    for instance in (0, 1):
+        for port in 'ABCD':
+            for idx in range(32):
+                pin = f'P{port}{idx:02d}'
+                pinmux = f'PINMUX_{pin}I_SDHC{instance}_{function}'
+                print(f'''\
+#if defined({pinmux}) && ! defined(IGNORE_PIN_{pin})
+    {{&pin_{pin}, {instance}, PIN_{pin}, {pinmux} & 0xffff}},
+#endif''')
+    print(f'{{NULL, 0, 0}}')
+    print(f'}};')
+    print()
+
+print('''\
+#include <stdint.h>
+#include "py/obj.h"
+#include "sam.h"
+#include "samd/pins.h"
+#include "mpconfigport.h"
+#include "atmel_start_pins.h"
+#include "hal/include/hal_gpio.h"
+
+typedef struct {
+    const mcu_pin_obj_t *obj;
+    uint8_t instance;
+    uint8_t pin;
+    uint16_t function;
+} pin_function_t;
+''')
+
+defines('sdio_ck', 'SDCK')
+defines('sdio_cmd', 'SDCMD')
+defines('sdio_dat0', 'SDDAT0')
+defines('sdio_dat1', 'SDDAT1')
+defines('sdio_dat2', 'SDDAT2')
+defines('sdio_dat3', 'SDDAT3')