altos/arm: Align data so that gcc 5.4 doesn't do byte-accesses. Add -Wcast-align

[fw/altos] / src / stm / stm32l.h

diff --git a/src/stm/stm32l.h b/src/stm/stm32l.h
index 0b6b27983d6a3633d891be36bfdd0f0ecb3063fe..be1e1d65112c6c47f7b65ee1b3be7bc9934c2472 100644 (file)
--- a/src/stm/stm32l.h
+++ b/src/stm/stm32l.h
@@ -3,7 +3,8 @@
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
  *
  * This program is distributed in the hope that it will be useful, but
  * WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -1359,10 +1360,13 @@ extern struct stm_spi stm_spi1, stm_spi2, stm_spi3;
 #define STM_SPI_CR2_TXDMAEN    1
 #define STM_SPI_CR2_RXDMAEN    0
 
+#define STM_SPI_SR_FRE         8
 #define STM_SPI_SR_BSY         7
 #define STM_SPI_SR_OVR         6
 #define STM_SPI_SR_MODF                5
 #define STM_SPI_SR_CRCERR      4
+#define STM_SPI_SR_UDR         3
+#define STM_SPI_SR_CHSIDE      2
 #define STM_SPI_SR_TXE         1
 #define STM_SPI_SR_RXNE                0
 
@@ -1957,7 +1961,7 @@ union stm_usb_bdt {
 
 #define STM_USB_BDT_SIZE       8
 
-extern uint8_t stm_usb_sram[];
+extern uint8_t stm_usb_sram[] __attribute__ ((aligned(4)));
 
 struct stm_exti {
        vuint32_t       imr;