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RAM slot to keep time for NRF52

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Kevin Le committed 2026-08-14 23:36:52 +07:00
1 parent ea246a621c
commit 2384af19b6
4 files changed
+52 -8
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boards/nrf52840_s140_v6.ld
+13 -2
View File
@@ -7,6 +7,9 @@ MEMORY
{
FLASH (rx) : ORIGIN = 0x26000, LENGTH = 0xED000 - 0x26000
/* To keep data in RAM across resets */
PERSISTENT_RAM (rwx) : ORIGIN = 0x20006000, LENGTH = 8
/* SRAM required by Softdevice depend on
* - Attribute Table Size (Number of Services and Characteristics)
* - Vendor UUID count
@@ -14,11 +17,19 @@ MEMORY
* - Concurrent connection peripheral + central + secure links
* - Event Len, HVN queue, Write CMD queue
*/
RAM (rwx) : ORIGIN = 0x20006000, LENGTH = 0x20040000 - 0x20006000
RAM (rwx) : ORIGIN = 0x20006000 + 8, LENGTH = 0x20040000 - 0x20006000 - 8
}
SECTIONS
{
. = ALIGN(4);
.persistent (NOLOAD) :
{
KEEP(*(.persistent_magic))
KEEP(*(.persistent_data))
. = ALIGN(4);
} > PERSISTENT_RAM
. = ALIGN(4);
.svc_data :
{
@@ -33,6 +44,6 @@ SECTIONS
KEEP(*(.fs_data))
PROVIDE(__stop_fs_data = .);
} > RAM
} INSERT AFTER .data;
}
INCLUDE "nrf52_common.ld"
boards/nrf52840_s140_v6_extrafs.ld
+13 -2
View File
@@ -7,6 +7,9 @@ MEMORY
{
FLASH (rx) : ORIGIN = 0x26000, LENGTH = 0xD4000 - 0x26000
/* To keep data in RAM across resets */
PERSISTENT_RAM (rwx) : ORIGIN = 0x20006000, LENGTH = 8
/* SRAM required by Softdevice depend on
* - Attribute Table Size (Number of Services and Characteristics)
* - Vendor UUID count
@@ -14,11 +17,19 @@ MEMORY
* - Concurrent connection peripheral + central + secure links
* - Event Len, HVN queue, Write CMD queue
*/
RAM (rwx) : ORIGIN = 0x20006000, LENGTH = 0x20040000 - 0x20006000
RAM (rwx) : ORIGIN = 0x20006000 + 8, LENGTH = 0x20040000 - 0x20006000 - 8
}
SECTIONS
{
. = ALIGN(4);
.persistent (NOLOAD) :
{
KEEP(*(.persistent_magic))
KEEP(*(.persistent_data))
. = ALIGN(4);
} > PERSISTENT_RAM
. = ALIGN(4);
.svc_data :
{
@@ -33,6 +44,6 @@ SECTIONS
KEEP(*(.fs_data))
PROVIDE(__stop_fs_data = .);
} > RAM
} INSERT AFTER .data;
}
INCLUDE "nrf52_common.ld"
boards/nrf52840_s140_v7.ld
+13 -2
View File
@@ -7,6 +7,9 @@ MEMORY
{
FLASH (rx) : ORIGIN = 0x27000, LENGTH = 0xED000 - 0x27000
/* To keep data in RAM across resets */
PERSISTENT_RAM (rwx) : ORIGIN = 0x20006000, LENGTH = 8
/* SRAM required by Softdevice depend on
* - Attribute Table Size (Number of Services and Characteristics)
* - Vendor UUID count
@@ -14,11 +17,19 @@ MEMORY
* - Concurrent connection peripheral + central + secure links
* - Event Len, HVN queue, Write CMD queue
*/
RAM (rwx) : ORIGIN = 0x20006000, LENGTH = 0x20040000 - 0x20006000
RAM (rwx) : ORIGIN = 0x20006000 + 8, LENGTH = 0x20040000 - 0x20006000 - 8
}
SECTIONS
{
. = ALIGN(4);
.persistent (NOLOAD) :
{
KEEP(*(.persistent_magic))
KEEP(*(.persistent_data))
. = ALIGN(4);
} > PERSISTENT_RAM
. = ALIGN(4);
.svc_data :
{
@@ -33,6 +44,6 @@ SECTIONS
KEEP(*(.fs_data))
PROVIDE(__stop_fs_data = .);
} > RAM
} INSERT AFTER .data;
}
INCLUDE "nrf52_common.ld"
boards/nrf52840_s140_v7_extrafs.ld
+13 -2
View File
@@ -7,6 +7,9 @@ MEMORY
{
FLASH (rx) : ORIGIN = 0x27000, LENGTH = 0xD4000 - 0x27000
/* To keep data in RAM across resets */
PERSISTENT_RAM (rwx) : ORIGIN = 0x20006000, LENGTH = 8
/* SRAM required by Softdevice depend on
* - Attribute Table Size (Number of Services and Characteristics)
* - Vendor UUID count
@@ -14,11 +17,19 @@ MEMORY
* - Concurrent connection peripheral + central + secure links
* - Event Len, HVN queue, Write CMD queue
*/
RAM (rwx) : ORIGIN = 0x20006000, LENGTH = 0x20040000 - 0x20006000
RAM (rwx) : ORIGIN = 0x20006000 + 8, LENGTH = 0x20040000 - 0x20006000 - 8
}
SECTIONS
{
. = ALIGN(4);
.persistent (NOLOAD) :
{
KEEP(*(.persistent_magic))
KEEP(*(.persistent_data))
. = ALIGN(4);
} > PERSISTENT_RAM
. = ALIGN(4);
.svc_data :
{
@@ -33,6 +44,6 @@ SECTIONS
KEEP(*(.fs_data))
PROVIDE(__stop_fs_data = .);
} > RAM
} INSERT AFTER .data;
}
INCLUDE "nrf52_common.ld"