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Diffstat (limited to 'src/fmc-test/src/stm-fmc.c')
-rw-r--r--src/fmc-test/src/stm-fmc.c232
1 files changed, 116 insertions, 116 deletions
diff --git a/src/fmc-test/src/stm-fmc.c b/src/fmc-test/src/stm-fmc.c
index 5459965..ca1a38d 100644
--- a/src/fmc-test/src/stm-fmc.c
+++ b/src/fmc-test/src/stm-fmc.c
@@ -19,11 +19,11 @@ SRAM_HandleTypeDef _fmc_fpga_inst;
void fmc_init(void)
//------------------------------------------------------------------------------
{
- // configure fmc pins
- _fmc_init_gpio();
+ // configure fmc pins
+ _fmc_init_gpio();
- // configure fmc registers
- _fmc_init_params();
+ // configure fmc registers
+ _fmc_init_params();
}
@@ -31,59 +31,59 @@ void fmc_init(void)
int fmc_write_32(uint32_t addr, uint32_t *data)
//------------------------------------------------------------------------------
{
- // calculate target fpga address
- uint32_t ptr = FMC_FPGA_BASE_ADDR + (addr & FMC_FPGA_ADDR_MASK);
+ // calculate target fpga address
+ uint32_t ptr = FMC_FPGA_BASE_ADDR + (addr & FMC_FPGA_ADDR_MASK);
- // write data to fpga
- HAL_StatusTypeDef ok = HAL_SRAM_Write_32b(&_fmc_fpga_inst, (uint32_t *)ptr, data, 1);
+ // write data to fpga
+ HAL_StatusTypeDef ok = HAL_SRAM_Write_32b(&_fmc_fpga_inst, (uint32_t *)ptr, data, 1);
- // check for error
- if (ok != HAL_OK) return -1;
+ // check for error
+ if (ok != HAL_OK) return -1;
- // wait for transaction to complete
- int wait = _fmc_nwait_idle();
+ // wait for transaction to complete
+ int wait = _fmc_nwait_idle();
- // check for timeout
- if (wait != 0) return -1;
+ // check for timeout
+ if (wait != 0) return -1;
- // everything went ok
- return 0;
+ // everything went ok
+ return 0;
}
//------------------------------------------------------------------------------
int fmc_read_32(uint32_t addr, uint32_t *data)
- //------------------------------------------------------------------------------
+//------------------------------------------------------------------------------
{
- // calculate target fpga address
- uint32_t ptr = FMC_FPGA_BASE_ADDR + (addr & FMC_FPGA_ADDR_MASK);
+ // calculate target fpga address
+ uint32_t ptr = FMC_FPGA_BASE_ADDR + (addr & FMC_FPGA_ADDR_MASK);
- // perform dummy read transaction
- HAL_StatusTypeDef ok = HAL_SRAM_Read_32b(&_fmc_fpga_inst, (uint32_t *)ptr, data, 1);
+ // perform dummy read transaction
+ HAL_StatusTypeDef ok = HAL_SRAM_Read_32b(&_fmc_fpga_inst, (uint32_t *)ptr, data, 1);
- // check for error
- if (ok != HAL_OK) return -1;
+ // check for error
+ if (ok != HAL_OK) return -1;
- // wait for dummy transaction to complete
- int wait = _fmc_nwait_idle();
+ // wait for dummy transaction to complete
+ int wait = _fmc_nwait_idle();
- // check for timeout
- if (wait != 0) return -1;
+ // check for timeout
+ if (wait != 0) return -1;
- // read data from fpga
- ok = HAL_SRAM_Read_32b(&_fmc_fpga_inst, (uint32_t *)ptr, data, 1);
+ // read data from fpga
+ ok = HAL_SRAM_Read_32b(&_fmc_fpga_inst, (uint32_t *)ptr, data, 1);
- // check for error
- if (ok != HAL_OK) return -1;
+ // check for error
+ if (ok != HAL_OK) return -1;
- // wait for read transaction to complete
- wait = _fmc_nwait_idle();
+ // wait for read transaction to complete
+ wait = _fmc_nwait_idle();
- // check for timeout
- if (wait != 0) return -1;
+ // check for timeout
+ if (wait != 0) return -1;
- // everything went ok
- return 0;
+ // everything went ok
+ return 0;
}
@@ -93,20 +93,20 @@ int _fmc_nwait_idle()
{
int cnt; // counter
- // poll NWAIT (number of iterations is limited)
+ // poll NWAIT (number of iterations is limited)
for (cnt=0; cnt<FMC_FPGA_NWAIT_MAX_POLL_TICKS; cnt++)
- {
+ {
// read pin state
- GPIO_PinState nwait = HAL_GPIO_ReadPin(FMC_GPIO_PORT_NWAIT, FMC_GPIO_PIN_NWAIT);
+ GPIO_PinState nwait = HAL_GPIO_ReadPin(FMC_GPIO_PORT_NWAIT, FMC_GPIO_PIN_NWAIT);
// stop waiting if fpga is ready
- if (nwait == FMC_NWAIT_IDLE) break;
- }
+ if (nwait == FMC_NWAIT_IDLE) break;
+ }
- // check for timeout
+ // check for timeout
if (cnt >= FMC_FPGA_NWAIT_MAX_POLL_TICKS) return -1;
- // ok
+ // ok
return 0;
}
@@ -114,93 +114,93 @@ int _fmc_nwait_idle()
void _fmc_init_gpio(void)
//------------------------------------------------------------------------------
{
- // enable gpio clocks
- __GPIOA_CLK_ENABLE();
- __GPIOB_CLK_ENABLE();
- __GPIOD_CLK_ENABLE();
+ // enable gpio clocks
+ __GPIOA_CLK_ENABLE();
+ __GPIOB_CLK_ENABLE();
+ __GPIOD_CLK_ENABLE();
__GPIOE_CLK_ENABLE();
- __GPIOF_CLK_ENABLE();
- __GPIOG_CLK_ENABLE();
- __GPIOH_CLK_ENABLE();
+ __GPIOF_CLK_ENABLE();
+ __GPIOG_CLK_ENABLE();
+ __GPIOH_CLK_ENABLE();
__GPIOI_CLK_ENABLE();
- // enable fmc clock
- __FMC_CLK_ENABLE();
+ // enable fmc clock
+ __FMC_CLK_ENABLE();
- // structure
- GPIO_InitTypeDef GPIO_InitStruct;
+ // structure
+ GPIO_InitTypeDef GPIO_InitStruct;
- // Port B
- GPIO_InitStruct.Pin = GPIO_PIN_7;
+ // Port B
+ GPIO_InitStruct.Pin = GPIO_PIN_7;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF12_FMC;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
- // Port D
- GPIO_InitStruct.Pin = GPIO_PIN_8|GPIO_PIN_9|GPIO_PIN_10|GPIO_PIN_11
- |GPIO_PIN_12|GPIO_PIN_13|GPIO_PIN_14|GPIO_PIN_15
- |GPIO_PIN_0|GPIO_PIN_1|GPIO_PIN_3|GPIO_PIN_4
- |GPIO_PIN_5|GPIO_PIN_7;
+ // Port D
+ GPIO_InitStruct.Pin = GPIO_PIN_8|GPIO_PIN_9|GPIO_PIN_10|GPIO_PIN_11
+ |GPIO_PIN_12|GPIO_PIN_13|GPIO_PIN_14|GPIO_PIN_15
+ |GPIO_PIN_0|GPIO_PIN_1|GPIO_PIN_3|GPIO_PIN_4
+ |GPIO_PIN_5|GPIO_PIN_7;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF12_FMC;
HAL_GPIO_Init(GPIOD, &GPIO_InitStruct);
- /*
- * When FMC is working with fixed latency, NWAIT pin must not be
- * configured in AF mode, according to STM32F429 errata.
- */
+ /*
+ * When FMC is working with fixed latency, NWAIT pin must not be
+ * configured in AF mode, according to STM32F429 errata.
+ */
- // Port D (GPIO!)
+ // Port D (GPIO!)
GPIO_InitStruct.Pin = GPIO_PIN_6;
GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
GPIO_InitStruct.Pull = GPIO_PULLUP;
HAL_GPIO_Init(GPIOD, &GPIO_InitStruct);
- // Port E
- GPIO_InitStruct.Pin = GPIO_PIN_3|GPIO_PIN_4|GPIO_PIN_5|GPIO_PIN_7
- |GPIO_PIN_8|GPIO_PIN_9|GPIO_PIN_10|GPIO_PIN_11
- |GPIO_PIN_12|GPIO_PIN_13|GPIO_PIN_14|GPIO_PIN_15;
+ // Port E
+ GPIO_InitStruct.Pin = GPIO_PIN_3|GPIO_PIN_4|GPIO_PIN_5|GPIO_PIN_7
+ |GPIO_PIN_8|GPIO_PIN_9|GPIO_PIN_10|GPIO_PIN_11
+ |GPIO_PIN_12|GPIO_PIN_13|GPIO_PIN_14|GPIO_PIN_15;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF12_FMC;
HAL_GPIO_Init(GPIOE, &GPIO_InitStruct);
- // Port F
- GPIO_InitStruct.Pin = GPIO_PIN_0|GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3
- |GPIO_PIN_4|GPIO_PIN_5|GPIO_PIN_12|GPIO_PIN_13
- |GPIO_PIN_14|GPIO_PIN_15;
+ // Port F
+ GPIO_InitStruct.Pin = GPIO_PIN_0|GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3
+ |GPIO_PIN_4|GPIO_PIN_5|GPIO_PIN_12|GPIO_PIN_13
+ |GPIO_PIN_14|GPIO_PIN_15;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF12_FMC;
HAL_GPIO_Init(GPIOF, &GPIO_InitStruct);
- // Port G
- GPIO_InitStruct.Pin = GPIO_PIN_0|GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3
- |GPIO_PIN_4|GPIO_PIN_5;
+ // Port G
+ GPIO_InitStruct.Pin = GPIO_PIN_0|GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3
+ |GPIO_PIN_4|GPIO_PIN_5;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF12_FMC;
HAL_GPIO_Init(GPIOG, &GPIO_InitStruct);
- // Port H
- GPIO_InitStruct.Pin = GPIO_PIN_8|GPIO_PIN_9|GPIO_PIN_10|GPIO_PIN_11
- |GPIO_PIN_12|GPIO_PIN_13|GPIO_PIN_14|GPIO_PIN_15;
+ // Port H
+ GPIO_InitStruct.Pin = GPIO_PIN_8|GPIO_PIN_9|GPIO_PIN_10|GPIO_PIN_11
+ |GPIO_PIN_12|GPIO_PIN_13|GPIO_PIN_14|GPIO_PIN_15;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF12_FMC;
HAL_GPIO_Init(GPIOH, &GPIO_InitStruct);
- // Port I
+ // Port I
GPIO_InitStruct.Pin = GPIO_PIN_9|GPIO_PIN_10|GPIO_PIN_0|GPIO_PIN_1
- |GPIO_PIN_2|GPIO_PIN_3|GPIO_PIN_6|GPIO_PIN_7;
+ |GPIO_PIN_2|GPIO_PIN_3|GPIO_PIN_6|GPIO_PIN_7;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
@@ -213,87 +213,87 @@ void _fmc_init_gpio(void)
void _fmc_init_params(void)
//------------------------------------------------------------------------------
{
- /*
- * fill internal fields
- */
- _fmc_fpga_inst.Instance = FMC_NORSRAM_DEVICE;
+ /*
+ * fill internal fields
+ */
+ _fmc_fpga_inst.Instance = FMC_NORSRAM_DEVICE;
_fmc_fpga_inst.Extended = FMC_NORSRAM_EXTENDED_DEVICE;
- /*
- * configure fmc interface settings
- */
+ /*
+ * configure fmc interface settings
+ */
- // use the first bank and corresponding chip select
+ // use the first bank and corresponding chip select
_fmc_fpga_inst.Init.NSBank = FMC_NORSRAM_BANK1;
- // data and address buses are separate
+ // data and address buses are separate
_fmc_fpga_inst.Init.DataAddressMux = FMC_DATA_ADDRESS_MUX_DISABLE;
- // fpga mimics psram-type memory
+ // fpga mimics psram-type memory
_fmc_fpga_inst.Init.MemoryType = FMC_MEMORY_TYPE_PSRAM;
- // data bus is 32-bit
+ // data bus is 32-bit
_fmc_fpga_inst.Init.MemoryDataWidth = FMC_NORSRAM_MEM_BUS_WIDTH_32;
- // read transaction is sync
+ // read transaction is sync
_fmc_fpga_inst.Init.BurstAccessMode = FMC_BURST_ACCESS_MODE_ENABLE;
- // this _must_ be configured to high, according to errata, otherwise
- // the processor may hang after trying to access fpga via fmc
+ // this _must_ be configured to high, according to errata, otherwise
+ // the processor may hang after trying to access fpga via fmc
_fmc_fpga_inst.Init.WaitSignalPolarity = FMC_WAIT_SIGNAL_POLARITY_HIGH;
- // wrap mode is not supported
+ // wrap mode is not supported
_fmc_fpga_inst.Init.WrapMode = FMC_WRAP_MODE_DISABLE;
- // don't care in fixed latency mode
+ // don't care in fixed latency mode
_fmc_fpga_inst.Init.WaitSignalActive = FMC_WAIT_TIMING_DURING_WS;
- // allow write access to fpga
+ // allow write access to fpga
_fmc_fpga_inst.Init.WriteOperation = FMC_WRITE_OPERATION_ENABLE;
- // use fixed latency mode (ignore wait signal)
+ // use fixed latency mode (ignore wait signal)
_fmc_fpga_inst.Init.WaitSignal = FMC_WAIT_SIGNAL_DISABLE;
- // write and read have same timing
+ // write and read have same timing
_fmc_fpga_inst.Init.ExtendedMode = FMC_EXTENDED_MODE_DISABLE;
- // don't care in sync mode
+ // don't care in sync mode
_fmc_fpga_inst.Init.AsynchronousWait = FMC_ASYNCHRONOUS_WAIT_DISABLE;
- // write transaction is sync
+ // write transaction is sync
_fmc_fpga_inst.Init.WriteBurst = FMC_WRITE_BURST_ENABLE;
- // keep clock always active
+ // keep clock always active
_fmc_fpga_inst.Init.ContinuousClock = FMC_CONTINUOUS_CLOCK_SYNC_ASYNC;
- /*
- * configure fmc timing parameters
- */
+ /*
+ * configure fmc timing parameters
+ */
FMC_NORSRAM_TimingTypeDef fmc_timing;
- // don't care in sync mode
+ // don't care in sync mode
fmc_timing.AddressSetupTime = 15;
- // don't care in sync mode
+ // don't care in sync mode
fmc_timing.AddressHoldTime = 15;
- // don't care in sync mode
+ // don't care in sync mode
fmc_timing.DataSetupTime = 255;
- // not needed, since nwait will be polled manually
+ // not needed, since nwait will be polled manually
fmc_timing.BusTurnAroundDuration = 0;
- // use smallest allowed divisor for best performance
+ // use smallest allowed divisor for best performance
fmc_timing.CLKDivision = 2;
- // stm is too slow to work with min allowed 2-cycle latency
+ // stm is too slow to work with min allowed 2-cycle latency
fmc_timing.DataLatency = 3;
- // don't care in sync mode
+ // don't care in sync mode
fmc_timing.AccessMode = FMC_ACCESS_MODE_A;
- // initialize fmc
+ // initialize fmc
HAL_SRAM_Init(&_fmc_fpga_inst, &fmc_timing, NULL);
}
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