riot-ci/RIOT
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

cpu/stm32_common: add flashpage support for stm32l4

Browse Source
This commit is contained in:
Alexandre Abadie 2018-04-11 09:56:40 +02:00
parent faa65f34bd
commit a008b983b3
2 changed files with 38 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
cpu/stm32_common/periph/flash_common.c
View File

@ -31,6 +31,10 @@
#define CNTRL_REG_LOCK (FLASH_PECR_PELOCK)
#define KEY_REG (FLASH->PEKEYR)
#else
#if defined(CPU_FAM_STM32L4)
#define FLASH_KEY1 ((uint32_t)0x45670123)
#define FLASH_KEY2 ((uint32_t)0xCDEF89AB)
#endif
#define CNTRL_REG (FLASH->CR)
#define CNTRL_REG_LOCK (FLASH_CR_LOCK)
#define KEY_REG (FLASH->KEYR)

38
cpu/stm32_common/periph/flashpage.c
View File

@ -41,9 +41,13 @@
#define FLASH_CR_PG (FLASH_PECR_FPRG | FLASH_PECR_PROG)
#define FLASHPAGE_DIV (4U) /* write 4 bytes in one go */
#else
#if defined(CPU_FAM_STM32L4)
#define FLASHPAGE_DIV (8U)
#else
#define FLASHPAGE_DIV (2U)
#endif
#define CNTRL_REG (FLASH->CR)
#define CNTRL_REG_LOCK (FLASH_CR_LOCK)
#define FLASHPAGE_DIV (2U)
#endif
extern void _lock(void);
@ -78,7 +82,8 @@ static void _wait_for_pending_operations(void)
static void _erase_page(void *page_addr)
{
#if defined(CPU_FAM_STM32L0) || defined(CPU_FAM_STM32L1)
#if defined(CPU_FAM_STM32L0) || defined(CPU_FAM_STM32L1) || \
defined(CPU_FAM_STM32L4)
uint32_t *dst = page_addr;
#else
uint16_t *dst = page_addr;
@ -101,7 +106,25 @@ static void _erase_page(void *page_addr)
#if defined(CPU_FAM_STM32L0) || defined(CPU_FAM_STM32L1)
DEBUG("[flashpage] erase: trigger the page erase\n");
*dst = (uint32_t)0;
#elif defined(CPU_FAM_STM32L4)
DEBUG("[flashpage] erase: setting the page address\n");
CNTRL_REG |= FLASH_CR_PER;
uint8_t pn;
#if FLASHPAGE_NUMOF <= 256
pn = (uint8_t)flashpage_page(dst);
#else
uint16_t page = flashpage_page(dst);
if (page > 255) {
CNTRL_REG |= FLASH_CR_BKER;
}
else {
CNTRL_REG &= ~FLASH_CR_BKER;
}
pn = (uint8_t)page;
#endif
CNTRL_REG |= (uint32_t)(pn << FLASH_CR_PNB_Pos);
CNTRL_REG |= FLASH_CR_STRT;
#else /* CPU_FAM_STM32F0 || CPU_FAM_STM32F1 */
DEBUG("[flashpage] erase: setting the page address\n");
FLASH->AR = (uint32_t)dst;
/* trigger the page erase and wait for it to be finished */
@ -118,7 +141,8 @@ static void _erase_page(void *page_addr)
/* lock the flash module again */
_lock();
#if !(defined(CPU_FAM_STM32L0) || defined(CPU_FAM_STM32L1))
#if !(defined(CPU_FAM_STM32L0) || defined(CPU_FAM_STM32L1) || \
defined(CPU_FAM_STM32L4))
/* restore the HSI state */
if (!hsi_state) {
stmclk_disable_hsi();
@ -143,6 +167,9 @@ void flashpage_write_raw(void *target_addr, const void *data, size_t len)
#if defined(CPU_FAM_STM32L0) || defined(CPU_FAM_STM32L1)
uint32_t *dst = target_addr;
const uint32_t *data_addr = data;
#elif defined(CPU_FAM_STM32L4)
uint64_t *dst = target_addr;
const uint64_t *data_addr = data;
#else
uint16_t *dst = (uint16_t *)target_addr;
const uint16_t *data_addr = data;
@ -174,7 +201,8 @@ void flashpage_write_raw(void *target_addr, const void *data, size_t len)
/* lock the flash module again */
_lock();
#if !(defined(CPU_FAM_STM32L0) || defined(CPU_FAM_STM32L1))
#if !(defined(CPU_FAM_STM32L0) || defined(CPU_FAM_STM32L1) || \
defined(CPU_FAM_STM32L4))
/* restore the HSI state */
if (!hsi_state) {
stmclk_disable_hsi();
@ -189,6 +217,8 @@ void flashpage_write(int page, const void *data)
#if defined(CPU_FAM_STM32L0) || defined(CPU_FAM_STM32L1)
/* STM32L0/L1 only supports word sizes */
uint32_t *page_addr = flashpage_addr(page);
#elif defined(CPU_FAM_STM32L4)
uint64_t *page_addr = flashpage_addr(page);
#else
/* Default is to support half-word sizes */
uint16_t *page_addr = flashpage_addr(page);