added files

1 files changed, 37 insertions, 0 deletions

diff --git a/code_refs/scratchpad.c b/code_refs/scratchpad.c
new file mode 100644
index 0000000..0fc1cfa
--- /dev/null
+++ b/code_refs/scratchpad.c
@@ -0,0 +1,37 @@
+	W25Q_STATE s = W25Q_Init();		 // init the chip
+	s = W25Q_EraseSector(0); // erase 4K sector - required before recording
+
+	// make test data
+	u8_t byte = 0x6D;
+	u8_t byte_read = 0;
+	u8_t in_page_shift = 0;
+	u8_t page_number = 0;
+	// write data
+	s= W25Q_ProgramByte(byte, in_page_shift, page_number);
+	// read data
+	s = W25Q_ReadByte(&byte_read, in_page_shift, page_number);
+    s = W25Q_Sleep();
+    char str[10];
+    sprintf(str, "read: %i", byte_read);
+    SHARPMEM_write(&lcd, str, 0, 0, 51, true, false);
+    SHARPMEM_refresh_display(&lcd);
+
+    if(!HAL_I2C_IsDeviceReady(&hi2c1, 0x32, 3, 1000)) {
+    	SHARPMEM_write(&lcd, "I2C works", 0, 0, 17, true, false);
+    	SHARPMEM_refresh_display(&lcd);
+    	uint8_t whoami[1] = {0};
+    	char whoami_str[10];
+    	HAL_StatusTypeDef e = HAL_I2C_Mem_Read(&hi2c1, 0x3C, 0x22, 1, whoami, 1, 1000);
+    	if(!e){
+			sprintf(whoami_str, "%i", byte_read);
+			SHARPMEM_write(&lcd, whoami_str, 0, 0, 34, true, false);
+			SHARPMEM_refresh_display(&lcd);
+    	} else {
+    		sprintf(whoami_str, "err: %x", (uint8_t)e);
+    		SHARPMEM_write(&lcd, whoami_str, 0, 0, 34, true, false);
+    		SHARPMEM_refresh_display(&lcd);
+    	}
+    } else {
+    	SHARPMEM_write(&lcd, "I2C doesn't work", 0, 0, 17, true, false);
+    	SHARPMEM_refresh_display(&lcd);
+    }