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understanding memory map in c
Candy splitting - lower memory usage neededHaskell requires more memory than Python when I read map from file. Why?Reducing memory usage for FizzBuzz in RWeb crawler uses lots of memoryPulling data from API, Allowed memory exhaustedMemory Management CodeMultiple emails and attachments, reusing memory streamMemory efficient Log ParserBasic memory pool, alignment, thread safetyGenetic Algorithm - heavy memory usage
$begingroup$
I am working in open source where , I have Zynq-7000 wit ARM processor http://www.ioe.nchu.edu.tw/Pic/CourseItem/4468_20_Zynq_Architecture.pdf
and CMV12000 image sensor (https://ams.com/documents/20143/36005/CMV12000_DS000603_1-00.pdf/f6797bfc-f20b-a0a4-bcea-92e8a02bb112)
I have to memory map this sensors data using mmap in C . I have code but not getting why mmap twice .
static uint32_t cmv_base = 0x60000000;
static uint32_t cmv_size = 0x00400000;
static uint32_t map_base = 0x18000000;
static uint32_t map_size = 0x08000000;
static uint32_t map_addr = 0x00000000;
static char *dev_mem = "/dev/mem";
uint32_t cmv_addr = 0x00000000;
int main ()
PROT_WRITE, MAP_SHARED,
fd, map_base);
return 0;
If this is not the place to ask , From where can I get help ?
please refer any resource .
c memory-optimization
asked 17 mins ago
kanchakancha
1
New contributor
kancha is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
add a comment |
$begingroup$
I am working in open source where , I have Zynq-7000 wit ARM processor http://www.ioe.nchu.edu.tw/Pic/CourseItem/4468_20_Zynq_Architecture.pdf
and CMV12000 image sensor (https://ams.com/documents/20143/36005/CMV12000_DS000603_1-00.pdf/f6797bfc-f20b-a0a4-bcea-92e8a02bb112)
I have to memory map this sensors data using mmap in C . I have code but not getting why mmap twice .
static uint32_t cmv_base = 0x60000000;
static uint32_t cmv_size = 0x00400000;
static uint32_t map_base = 0x18000000;
static uint32_t map_size = 0x08000000;
static uint32_t map_addr = 0x00000000;
static char *dev_mem = "/dev/mem";
uint32_t cmv_addr = 0x00000000;
int main ()
PROT_WRITE, MAP_SHARED,
fd, map_base);
return 0;
If this is not the place to ask , From where can I get help ?
please refer any resource .
c memory-optimization
asked 17 mins ago
kanchakancha
1
New contributor
kancha is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
add a comment |
$begingroup$
I am working in open source where , I have Zynq-7000 wit ARM processor http://www.ioe.nchu.edu.tw/Pic/CourseItem/4468_20_Zynq_Architecture.pdf
and CMV12000 image sensor (https://ams.com/documents/20143/36005/CMV12000_DS000603_1-00.pdf/f6797bfc-f20b-a0a4-bcea-92e8a02bb112)
I have to memory map this sensors data using mmap in C . I have code but not getting why mmap twice .
static uint32_t cmv_base = 0x60000000;
static uint32_t cmv_size = 0x00400000;
static uint32_t map_base = 0x18000000;
static uint32_t map_size = 0x08000000;
static uint32_t map_addr = 0x00000000;
static char *dev_mem = "/dev/mem";
uint32_t cmv_addr = 0x00000000;
int main ()
PROT_WRITE, MAP_SHARED,
fd, map_base);
return 0;
If this is not the place to ask , From where can I get help ?
please refer any resource .
c memory-optimization
asked 17 mins ago
kanchakancha
1
New contributor
kancha is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
I am working in open source where , I have Zynq-7000 wit ARM processor http://www.ioe.nchu.edu.tw/Pic/CourseItem/4468_20_Zynq_Architecture.pdf
and CMV12000 image sensor (https://ams.com/documents/20143/36005/CMV12000_DS000603_1-00.pdf/f6797bfc-f20b-a0a4-bcea-92e8a02bb112)
I have to memory map this sensors data using mmap in C . I have code but not getting why mmap twice .
static uint32_t cmv_base = 0x60000000;
static uint32_t cmv_size = 0x00400000;
static uint32_t map_base = 0x18000000;
static uint32_t map_size = 0x08000000;
static uint32_t map_addr = 0x00000000;
static char *dev_mem = "/dev/mem";
uint32_t cmv_addr = 0x00000000;
int main ()
PROT_WRITE, MAP_SHARED,
fd, map_base);
return 0;
If this is not the place to ask , From where can I get help ?
please refer any resource .
c memory-optimization
c memory-optimization
asked 17 mins ago
kanchakancha
1
New contributor
kancha is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 17 mins ago
kanchakancha
1
New contributor
kancha is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 17 mins ago
kanchakancha
1
New contributor
kancha is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 17 mins ago
kanchakancha
1
asked 17 mins ago
kanchakancha
1
1
New contributor
kancha is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
kancha is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
kancha is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
add a comment |
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