1. Added a flag to issue START command
2. Do not send START command inside i2c_start function as
the LPI2C hardware will issue a STOP on reception
of a NACK
3. Remove the i2c_address global variable, this is not
required
Signed-off-by: Mahesh Mahadevan <mahesh.mahadevan@nxp.com>
1. Remove the repeated_start flag and code as this is not needed
for the LPI2C module
2. Enable the SION bit on the I2C pins
3. Enable 22K Pullup option of the I2C pins
4. Update the 0 byte write implementation to ensure the START
command gets flushed out of the FIFO
Signed-off-by: Mahesh Mahadevan <mahesh.mahadevan@nxp.com>
* align MPS2_M0 FVP target with other MPS2 targets
* moved memory_zones.h
* chnage the flash_api.c where referencing the old memory_zones
* modify mbed_rtx.h to use the memory_zones definations as INITIAL_SP
* all linker scripts reference the definitions from memory_zones.h
* tool chains use predefined 1K as ISR Stack size
* ARM Complier 5 and GCC will auto calculated heap size
* IAR use predefined 2MiB as heap size
* added memory_zones.h
* all linker scripts reference the definitions from memory_zones.h
* tool chains use predefined 1K as ISR Stack size
* ARM Complier 5 and GCC will auto calculated heap size
* IAR use predefined 2MiB as heap size
* added memory_zones.h
* all linker scripts reference the definitions from memory_zones.h
* tool chains use predefined 1K as ISR Stack size
* ARM Complier 5 and GCC will auto calculated heap size
* IAR use predefined 2MiB as heap size
* added memory_zones.h
* all linker scripts reference the definitions from memory_zones.h
* tool chains use predefined 1K as ISR Stack size
* ARM Complier 5 and GCC will auto calculated heap size
* IAR use predefined 2MiB as heap size
* added memory_zones.h
* all linker scripts reference the definitions from memory_zones.h
* tool chains use predefined 1K as ISR Stack size
* ARM Complier 5 and GCC will auto calculated heap size
* IAR use predefined 2MiB as heap size
The period of pwm we could get was limited to 69.9 ms, because prescaler value was set once only during initialization. base->mod is a 16 bit register, to get longer period we have to slow down the clk.
i2c_api implementation for NRF52 does a disable() followed by uninit().
The uniinit() implementation in NRF drivers layer makes another call to
disable. This throws off the state of the I2C instance leading to an
assert. Since the disable is only invoked from the I2C API layer for
Nordic, remove this redundant call.
Signed-off-by: Naveen Kaje <Naveen.Kaje@arm.com>
As suggested by Russ Butler in mbed-os issue #7328, and until there is an
implementation of mbed-os issue #4408, we are implementing a workaround
at HAL level to check if there is any ongoing serial transfer (which happens
if HW FIFO is not yet empty).
In case a transfer is ongoing, we're not entering deep sleep and
return immediately.
SKIP_SYSCLK_INIT prevents reinitializing the SYS_CLK PLL used by SDRAM.
This PLL is setup during bootup by the ROM code.
Signed-off-by: Mahesh Mahadevan <mahesh.mahadevan@nxp.com>
Low power functions related to powering off FLEXSPI and SDRAM needs
to be copied to internal memory
Signed-off-by: Mahesh Mahadevan <mahesh.mahadevan@nxp.com>
I modified the _page_program() because when the request of the size exceeding the maximum size(256 byte) per one writing of Flash recieved, it was not able to loop the writing with sifting the address every 256 byte.
Also I modified the return value of flash_get_page_size() because I found that the minimum size per one writing of Flash is 1 byte by reviewing Flash spec.
"FLASH_PAGE_SIZE" macro's value is remain 256, it doesn't be used at flash_get_page_size(), used at _page_program() for refferencing of the maximum page size.
Although other venders implement this feature by using RTC, in my H/W(RZ_A1), I cannot use RTC because it does not satisfy the spec of LP Ticker (ms order and low frequency between 8 KHz and 64 KHz).
Therefore I implemented this feature by creating 1024 division by MTU2(Multi function Timer pulse Unit 2) in order to satisfy this spec.
As a result of investigating, the most unaffected channel among MTU2 placed on GR-PEACH and GR-LYCHEE was channel 3, so I use channel 3 for this feature.
- mbed_drv_cfg.h
I added a macro of MTU2 channel to this file for commonalizing code for GR-PEACH and GR-LYCHEE, and referenced it's macro at us_ticker.c.
- targets.json
I added a macro for enabling LP Ticker.
- mtu2.c mtu2.h
I defined fuction of MTU2's clock supply and stop.
Because MTU2 is utilized by pwm driver too, those function were referenced at lp_ticker driver and pwm driver.
- lp_ticker.c lp_ticker_init()
In order to satisfy the LP Ticker spec, I implemented by creating 1024 division by MTU2.
When an interrupt is required, it will be set with ticker_set_interrupt().
- lp_ticker.c lp_ticker_free()
This function stops the counting and powerdown the lp_ticker.
- lp_ticker.c lp_read()
This function returns the timer counter of MTU2.
- lp_ticker.c lp_ticker_set_interrupt()
In order to satisfy specifications, I implemented lp_ticker_set_interrupt() function.
- lp_ticker.c lp_ticker_fire_interrupt()
In order to satisfy spec, I implemented lp_ticker_fire_interrupt() function.
Also I added GIC_EnableIRQ for allowing the interrupt at end of function.
- lp_ticker.c lp_ticker_get_info()
To satisfy the spec, I implemented lp_ticker_get_info() function. The value of freq includes rounding off.
Mahesh Mahadevan
jeromecoutant
Simo Sillankorva
David Saada
Oren Cohen
Qinghao Shi
MateuszM
Bence Kaposzta
Naveen Kaje
Kari Haapalehto
Mirela Chirica
Laurent Meunier
Edmund Hsu
bcostm
ccli8
TomoYamanaka