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drivers/sensors/bmi270: Enable to select config memory

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Allow to transfer the BMI270 configuration data directly, and
provide an option to use the heap memory if it cannot transfer
directly.
This commit is contained in:
SPRESENSE 2023-08-29 19:55:23 +09:00 committed by Xiang Xiao
parent a015aa4fca
commit 60364d7c72
2 changed files with 23 additions and 1 deletions
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8
drivers/sensors/Kconfig
View File

@ -232,6 +232,14 @@ config SENSORS_BMI270_SPI
endchoice
config SENSORS_BMI270_LOAD_FROM_HEAP
bool "BMI270 config loading from heap memory"
default n
---help---
Enable support to load the configuration data from heap memory.
Some chips can not do DMA transfer from FLASH and therefore
it is necessary to transfer the configuration file to RAM.
endif
config SENSORS_BMP180

16
drivers/sensors/bmi270.c
View File

@ -1258,9 +1258,11 @@ static int bmi270_init_seq(FAR struct bmi270_dev_s *priv)
bmi270_putreg8(priv, BMI270_INIT_CTRL, 0);
#ifdef CONFIG_SENSORS_BMI270_LOAD_FROM_HEAP
/* Copy configuration to RAM */
tmp = malloc(sizeof(g_bmi270_config_file));
tmp = kmm_malloc(sizeof(g_bmi270_config_file));
if (tmp == NULL)
{
snerr("Failed to allocate memory for configuration file\n");
@ -1269,12 +1271,24 @@ static int bmi270_init_seq(FAR struct bmi270_dev_s *priv)
memcpy(tmp, g_bmi270_config_file, sizeof(g_bmi270_config_file));
#else
/* Transfer directly from const data memory */
tmp = (FAR uint8_t *)&g_bmi270_config_file;
#endif
/* Load configuration - start with byte 0 */
bmi270_putregs(priv, BMI270_INIT_DATA,
tmp,
sizeof(g_bmi270_config_file));
#ifdef CONFIG_SENSORS_BMI270_LOAD_FROM_HEAP
kmm_free(tmp);
#endif
/* Complete config load INIT_CTRL=0x01 */
bmi270_putreg8(priv, BMI270_INIT_CTRL, 1);