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drivers: modem_cellular: make the buffer sizes configurable

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To allow fine tuning and accommodate modem differences.

Signed-off-by: Tomi Fontanilles <tomi.fontanilles@nordicsemi.no>
This commit is contained in:
Tomi Fontanilles 2024-02-14 08:12:34 +02:00 committed by Carles Cufí
parent 0f5b3269df
commit c6176b523a
2 changed files with 22 additions and 7 deletions
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14
drivers/modem/Kconfig.cellular
View file

@ -36,4 +36,18 @@ config MODEM_CELLULAR_PERIODIC_SCRIPT_MS
int "Periodic script interval in milliseconds"
default 2000
config MODEM_CELLULAR_UART_BUFFER_SIZES
int "The UART receive and transmit buffer sizes in bytes."
default 512
config MODEM_CELLULAR_CMUX_MAX_FRAME_SIZE
int "The maximum CMUX frame size in bytes."
default 128
help
This value affects the size of buffers used to receive and transmit CMUX frames.
config MODEM_CELLULAR_CHAT_BUFFER_SIZES
int "The size of the buffers used for the chat scripts in bytes."
default 128
endif

15
drivers/modem/modem_cellular.c
View file

@ -79,23 +79,24 @@ struct modem_cellular_data {
/* UART backend */
struct modem_pipe *uart_pipe;
struct modem_backend_uart uart_backend;
uint8_t uart_backend_receive_buf[512];
uint8_t uart_backend_transmit_buf[512];
uint8_t uart_backend_receive_buf[CONFIG_MODEM_CELLULAR_UART_BUFFER_SIZES];
uint8_t uart_backend_transmit_buf[CONFIG_MODEM_CELLULAR_UART_BUFFER_SIZES];
/* CMUX */
struct modem_cmux cmux;
uint8_t cmux_receive_buf[128];
uint8_t cmux_transmit_buf[256];
uint8_t cmux_receive_buf[CONFIG_MODEM_CELLULAR_CMUX_MAX_FRAME_SIZE];
uint8_t cmux_transmit_buf[2 * CONFIG_MODEM_CELLULAR_CMUX_MAX_FRAME_SIZE];
struct modem_cmux_dlci dlci1;
struct modem_cmux_dlci dlci2;
struct modem_pipe *dlci1_pipe;
struct modem_pipe *dlci2_pipe;
uint8_t dlci1_receive_buf[128];
uint8_t dlci2_receive_buf[256];
uint8_t dlci1_receive_buf[CONFIG_MODEM_CELLULAR_CMUX_MAX_FRAME_SIZE];
/* DLCI 2 is only used for chat scripts. */
uint8_t dlci2_receive_buf[CONFIG_MODEM_CELLULAR_CHAT_BUFFER_SIZES];
/* Modem chat */
struct modem_chat chat;
uint8_t chat_receive_buf[128];
uint8_t chat_receive_buf[CONFIG_MODEM_CELLULAR_CHAT_BUFFER_SIZES];
uint8_t *chat_delimiter;
uint8_t *chat_filter;
uint8_t *chat_argv[32];