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| author | Damien George <damien.p.george@gmail.com> | 2017-03-31 12:56:18 +1100 |
|---|---|---|
| committer | Damien George <damien.p.george@gmail.com> | 2017-03-31 12:56:18 +1100 |
| commit | 2460888c7403748dc665e3bb5d2e1a321ded4a35 (patch) | |
| tree | 217f8e0786da594f3658ba5ea914a5504829737d | |
| parent | aa7de3ff67199fac308184850aa41e598f3717a1 (diff) | |
| download | micropython-2460888c7403748dc665e3bb5d2e1a321ded4a35.tar.gz micropython-2460888c7403748dc665e3bb5d2e1a321ded4a35.zip | |
stmhal/i2c: Clean the cache so that I2C DMA works on F7 MCUs.
| -rw-r--r-- | stmhal/i2c.c | 6 | ||||
| -rw-r--r-- | stmhal/mphalport.h | 4 |
2 files changed, 8 insertions, 2 deletions
diff --git a/stmhal/i2c.c b/stmhal/i2c.c index e818ec380f..a3ded36ec0 100644 --- a/stmhal/i2c.c +++ b/stmhal/i2c.c @@ -760,12 +760,14 @@ STATIC mp_obj_t pyb_i2c_send(mp_uint_t n_args, const mp_obj_t *pos_args, mp_map_ if (!use_dma) { status = HAL_I2C_Master_Transmit(self->i2c, i2c_addr, bufinfo.buf, bufinfo.len, args[2].u_int); } else { + MP_HAL_CLEAN_DCACHE(bufinfo.buf, bufinfo.len); status = HAL_I2C_Master_Transmit_DMA(self->i2c, i2c_addr, bufinfo.buf, bufinfo.len); } } else { if (!use_dma) { status = HAL_I2C_Slave_Transmit(self->i2c, bufinfo.buf, bufinfo.len, args[2].u_int); } else { + MP_HAL_CLEAN_DCACHE(bufinfo.buf, bufinfo.len); status = HAL_I2C_Slave_Transmit_DMA(self->i2c, bufinfo.buf, bufinfo.len); } } @@ -834,12 +836,14 @@ STATIC mp_obj_t pyb_i2c_recv(mp_uint_t n_args, const mp_obj_t *pos_args, mp_map_ if (!use_dma) { status = HAL_I2C_Master_Receive(self->i2c, i2c_addr, (uint8_t*)vstr.buf, vstr.len, args[2].u_int); } else { + MP_HAL_CLEANINVALIDATE_DCACHE(vstr.buf, vstr.len); status = HAL_I2C_Master_Receive_DMA(self->i2c, i2c_addr, (uint8_t*)vstr.buf, vstr.len); } } else { if (!use_dma) { status = HAL_I2C_Slave_Receive(self->i2c, (uint8_t*)vstr.buf, vstr.len, args[2].u_int); } else { + MP_HAL_CLEANINVALIDATE_DCACHE(vstr.buf, vstr.len); status = HAL_I2C_Slave_Receive_DMA(self->i2c, (uint8_t*)vstr.buf, vstr.len); } } @@ -920,6 +924,7 @@ STATIC mp_obj_t pyb_i2c_mem_read(mp_uint_t n_args, const mp_obj_t *pos_args, mp_ dma_init(&rx_dma, self->rx_dma_descr, self->i2c); self->i2c->hdmatx = NULL; self->i2c->hdmarx = &rx_dma; + MP_HAL_CLEANINVALIDATE_DCACHE(vstr.buf, vstr.len); status = HAL_I2C_Mem_Read_DMA(self->i2c, i2c_addr, mem_addr, mem_addr_size, (uint8_t*)vstr.buf, vstr.len); if (status == HAL_OK) { status = i2c_wait_dma_finished(self->i2c, args[3].u_int); @@ -988,6 +993,7 @@ STATIC mp_obj_t pyb_i2c_mem_write(mp_uint_t n_args, const mp_obj_t *pos_args, mp dma_init(&tx_dma, self->tx_dma_descr, self->i2c); self->i2c->hdmatx = &tx_dma; self->i2c->hdmarx = NULL; + MP_HAL_CLEAN_DCACHE(bufinfo.buf, bufinfo.len); status = HAL_I2C_Mem_Write_DMA(self->i2c, i2c_addr, mem_addr, mem_addr_size, bufinfo.buf, bufinfo.len); if (status == HAL_OK) { status = i2c_wait_dma_finished(self->i2c, args[3].u_int); diff --git a/stmhal/mphalport.h b/stmhal/mphalport.h index 7521024020..77cb0204d0 100644 --- a/stmhal/mphalport.h +++ b/stmhal/mphalport.h @@ -10,8 +10,8 @@ #define MP_HAL_CLEAN_DCACHE(addr, size) #elif defined(MCU_SERIES_F7) #define MP_HAL_UNIQUE_ID_ADDRESS (0x1ff0f420) -#define MP_HAL_CLEANINVALIDATE_DCACHE(addr, size) (SCB_CleanInvalidateDCache_by_Addr((uint32_t*)((uint32_t)addr & ~0x1f), ((uint32_t)(addr + size + 0x1f) & ~0x1f) - ((uint32_t)addr & ~0x1f))) -#define MP_HAL_CLEAN_DCACHE(addr, size) (SCB_CleanDCache_by_Addr((uint32_t*)((uint32_t)addr & ~0x1f), ((uint32_t)(addr + size + 0x1f) & ~0x1f) - ((uint32_t)addr & ~0x1f))) +#define MP_HAL_CLEANINVALIDATE_DCACHE(addr, size) (SCB_CleanInvalidateDCache_by_Addr((uint32_t*)((uint32_t)addr & ~0x1f), ((uint32_t)((uint8_t*)addr + size + 0x1f) & ~0x1f) - ((uint32_t)addr & ~0x1f))) +#define MP_HAL_CLEAN_DCACHE(addr, size) (SCB_CleanDCache_by_Addr((uint32_t*)((uint32_t)addr & ~0x1f), ((uint32_t)((uint8_t*)addr + size + 0x1f) & ~0x1f) - ((uint32_t)addr & ~0x1f))) #elif defined(MCU_SERIES_L4) #define MP_HAL_UNIQUE_ID_ADDRESS (0x1fff7590) #define MP_HAL_CLEANINVALIDATE_DCACHE(addr, size) |