ARMmbed
/
mbed-os
mirror of https://github.com/ARMmbed/mbed-os.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

LPC176X: Fix flash program size 

This patch fix flash write issue when program size is more than page size (= 1024 bytes).  See detail - https://github.com/ARMmbed/mbed-os/issues/6165
Source data always use aligned data in heap memory.
pull/6413/head
toyowata 2018-03-21 18:36:16 +09:00
parent 53cb6e06f9
commit d76d511969
1 changed files with 38 additions and 24 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

62
targets/TARGET_NXP/TARGET_LPC176X/device/flash_api.c
View File

@ -112,42 +112,56 @@ int32_t flash_program_page(flash_t *obj, uint32_t address,
const uint8_t *data, uint32_t size)
{
unsigned long n;
const uint32_t copySize = 1024; // should be 256|512|1024|4096
uint8_t *alignedData, *source;
// always malloc outside critical section
uint8_t *alignedData = malloc(size);
alignedData = malloc(size);
if (alignedData == 0) {
return (1);
}
n = GetSecNum(address); // Get Sector Number
memcpy(alignedData, data, size);
source = alignedData;
core_util_critical_section_enter();
IAP.cmd = 50;// Prepare Sector for Write
IAP.par[0] = n;// Start Sector
IAP.par[1] = n;// End Sector
IAP_Call (&IAP.cmd, &IAP.stat);// Call IAP Command
if (IAP.stat) {
return (1); // Command Failed
while (size) {
/*
Prepare_Sector_for_Write command must be exected before
Copy_RAM_to_Flash command.
*/
IAP.cmd = 50; // Prepare Sector for Write
IAP.par[0] = n; // Start Sector
IAP.par[1] = n; // End Sector
IAP_Call (&IAP.cmd, &IAP.stat); // Call IAP Command
if (IAP.stat) {
return (1); // Command Failed
}
IAP.cmd = 51; // Copy RAM to Flash
IAP.par[0] = address; // Destination Flash Address
IAP.par[1] = (unsigned long)source; // Source RAM Address
IAP.par[2] = copySize; // number of bytes to be written
IAP.par[3] = CCLK; // CCLK in kHz
IAP_Call (&IAP.cmd, &IAP.stat); // Call IAP Command
if (IAP.stat) {
return (1); // Command Failed
}
source += copySize;
size -= copySize;
address += copySize;
}
IAP.cmd = 51; // Copy RAM to Flash
IAP.par[0] = address;// Destination Flash Address
if ((unsigned long)data%4==0) { // Word boundary
IAP.par[1] = (unsigned long)data;// Source RAM Address
} else {
memcpy(alignedData,data,size);
IAP.par[1] = (unsigned long)alignedData; // Source RAM Address
}
IAP.par[2] = 1024; // Fixed Page Size
IAP.par[3] = CCLK;// CCLK in kHz
IAP_Call (&IAP.cmd, &IAP.stat);// Call IAP Command
core_util_critical_section_exit();
if(alignedData !=0) { // We allocated our own memory
if(alignedData != 0) { // We allocated our own memory
free(alignedData);
}
if (IAP.stat) {
return (1); // Command Failed
}
return (0); // Finished without Errors
}