diff options
Diffstat (limited to 'src/spicmds.c')
| -rw-r--r-- | src/spicmds.c | 39 |
1 files changed, 35 insertions, 4 deletions
diff --git a/src/spicmds.c b/src/spicmds.c index 0017c56b..99e3b3a6 100644 --- a/src/spicmds.c +++ b/src/spicmds.c @@ -5,14 +5,19 @@ // This file may be distributed under the terms of the GNU GPLv3 license. #include <string.h> // memcpy +#include "autoconf.h" // CONFIG_HAVE_GPIO_BITBANGING #include "board/gpio.h" // gpio_out_write #include "basecmd.h" // oid_alloc #include "command.h" // DECL_COMMAND #include "sched.h" // DECL_SHUTDOWN +#include "spi_software.h" // spi_software_setup #include "spicmds.h" // spidev_transfer struct spidev_s { - struct spi_config spi_config; + union { + struct spi_config spi_config; + struct spi_software *spi_software; + }; struct gpio_out pin; uint8_t flags; uint8_t shutdown_msg_len; @@ -20,7 +25,7 @@ struct spidev_s { }; enum { - SF_HAVE_PIN = 1, + SF_HAVE_PIN = 1, SF_SOFTWARE = 2, }; void @@ -58,6 +63,26 @@ DECL_COMMAND(command_config_spi_without_cs, "config_spi_without_cs oid=%c bus=%u mode=%u rate=%u" " shutdown_msg=%*s"); +void +command_config_spi_from_software(uint32_t *args) +{ + uint8_t shutdown_msg_len = args[3]; + struct spi_software *sspi = spi_software_oid_lookup(args[1]); + struct spidev_s *spi = oid_alloc(args[0], command_config_spi + , sizeof(*spi) + shutdown_msg_len); + spi->pin = gpio_out_setup(args[2], 1); + spi->flags = SF_HAVE_PIN | SF_SOFTWARE; + spi->spi_software = sspi; + spi->shutdown_msg_len = shutdown_msg_len; + uint8_t *shutdown_msg = (void*)(size_t)args[4]; + memcpy(spi->shutdown_msg, shutdown_msg, shutdown_msg_len); +} +#if CONFIG_HAVE_GPIO_BITBANGING +DECL_COMMAND(command_config_spi_from_software, + "config_spi_from_software oid=%c sw_oid=%u pin=%u" + " shutdown_msg=%*s"); +#endif + struct spidev_s * spidev_oid_lookup(uint8_t oid) { @@ -68,12 +93,18 @@ void spidev_transfer(struct spidev_s *spi, uint8_t receive_data , uint8_t data_len, uint8_t *data) { - spi_prepare(spi->spi_config); + if (CONFIG_HAVE_GPIO_BITBANGING && spi->flags & SF_SOFTWARE) + spi_software_prepare(spi->spi_software); + else + spi_prepare(spi->spi_config); if (spi->flags & SF_HAVE_PIN) gpio_out_write(spi->pin, 0); - spi_transfer(spi->spi_config, receive_data, data_len, data); + if (CONFIG_HAVE_GPIO_BITBANGING && spi->flags & SF_SOFTWARE) + spi_software_transfer(spi->spi_software, receive_data, data_len, data); + else + spi_transfer(spi->spi_config, receive_data, data_len, data); if (spi->flags & SF_HAVE_PIN) gpio_out_write(spi->pin, 1); |