26 #include <libopencm3/stm32/flash.h> 27 #include <libopencm3/stm32/desig.h> 28 #include <libopencm3/stm32/dbgmcu.h> 36 if (address<FLASH_BASE || address>(UINT32_MAX-size) ||
buffer==NULL || size==0) {
41 #if defined(__flash_end) 42 if (address<FLASH_BASE || (address+size)>(uint32_t)&__flash_end)
44 if (address<FLASH_BASE || (address+size)>(FLASH_BASE+DESIG_FLASH_SIZE*1024))
51 for (
size_t i=0; i<size; i++) {
52 buffer[i] = *((uint8_t*)address+i);
61 if (address<FLASH_BASE || address>(UINT32_MAX-size) ||
buffer==NULL || size==0 || size%2) {
66 #if defined(__flash_end) 67 if (address<FLASH_BASE || (address+size)>(uint32_t)&__flash_end)
69 if (address<FLASH_BASE || (address+size)>(FLASH_BASE+DESIG_FLASH_SIZE*1024))
76 uint16_t page_size = 0;
77 if ((0x412==(DBGMCU_IDCODE&DBGMCU_IDCODE_DEV_ID_MASK)) || (0x412==(DBGMCU_IDCODE&DBGMCU_IDCODE_DEV_ID_MASK))) {
79 }
else if ((0x414==(DBGMCU_IDCODE&DBGMCU_IDCODE_DEV_ID_MASK)) || (0x430==(DBGMCU_IDCODE&DBGMCU_IDCODE_DEV_ID_MASK)) || (0x418==(DBGMCU_IDCODE&DBGMCU_IDCODE_DEV_ID_MASK))) {
82 if (DESIG_FLASH_SIZE<256) {
91 uint32_t page_start = address-(address%page_size);
93 for (uint32_t flash=address; flash<(address+size) && flash<(page_start+page_size); flash += 2) {
94 if (*(uint16_t*)(flash)!=0xffff) {
99 uint8_t page_data[page_size];
102 for (uint32_t flash=page_start; flash<address && flash<(page_start+page_size) && page_i<page_size; flash++) {
103 page_data[page_i++] = *(uint8_t*)(flash);
106 while (size>0 && page_i<page_size) {
107 page_data[page_i++] = *
buffer;
113 while (page_i<page_size) {
114 page_data[page_i] = *(uint8_t*)(page_start+page_i);
117 flash_erase_page(page_start);
118 if (flash_get_status_flags()!=FLASH_SR_EOP) {
122 for (uint16_t i=0; i<page_size/2; i++) {
123 flash_program_half_word(page_start+i*2, *((uint16_t*)(page_data+i*2)));
124 if (flash_get_status_flags()!=FLASH_SR_EOP) {
128 if (*((uint16_t*)(page_data+i*2))!=*((uint16_t*)(page_start+i*2))) {
134 while (size>0 && address<(page_start+page_size)) {
135 flash_program_half_word(address, *((uint16_t*)(
buffer)));
136 if (flash_get_status_flags()!=FLASH_SR_EOP) {
140 if (*((uint16_t*)address)!=*((uint16_t*)
buffer)) {
global definitions and methods (API)
library to read/write internal flash (API)
bool flash_internal_read(uint32_t address, uint8_t *buffer, size_t size)
read data from internal flash
static uint8_t * buffer
input/output buffer for read/write commands/functions
bool flash_internal_write(uint32_t address, uint8_t *buffer, size_t size)
write data to internal flash