altos: Allow MPU9250 SPI speed to be set by application

[fw/altos] / src / stmf0 / ao_flash_stm.c

diff --git a/src/stmf0/ao_flash_stm.c b/src/stmf0/ao_flash_stm.c
index ef2e261909574d8d8715ac850dc615f0a35f9263..896d536ba0c1612e7fe341b4a4da0d399aa445ba 100644 (file)
--- a/src/stmf0/ao_flash_stm.c
+++ b/src/stmf0/ao_flash_stm.c
@@ -19,6 +19,12 @@
 #include <ao.h>
 #include <ao_flash.h>
 
+/* Note that the HSI clock must be running for this code to work.
+ * Also, special care must be taken with the linker to ensure that the
+ * functions marked 'ramtext' land in ram and not rom. An example of that
+ * can be found in altos-loader.ld
+ */
+
 static uint8_t
 ao_flash_is_locked(void)
 {
@@ -46,7 +52,7 @@ ao_flash_lock(void)
 
 #define ao_flash_wait_bsy() do { while (stm_flash.sr & (1 << STM_FLASH_SR_BSY)); } while (0)
 
-static void __attribute__ ((section(".ramtext"),noinline))
+static void __attribute__ ((section(".sdata2.flash"), noinline))
 _ao_flash_erase_page(uint32_t *page)
 {
        stm_flash.cr |= (1 << STM_FLASH_CR_PER);
@@ -97,7 +103,7 @@ ao_flash_erase_page(uint32_t *page)
        ao_arch_release_interrupts();
 }
 
-static void __attribute__ ((section(".ramtext"), noinline))
+static void __attribute__ ((section(".sdata2.flash"), noinline))
 _ao_flash_page(uint16_t *dst, uint16_t *src)
 {
        uint8_t         i;