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shell: safe print from different threads

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Added display text management to shell_fprintf function.
Now it can be used from diffrent threads with not risk that
displayed lines will overlay.

Signed-off-by: Jakub Rzeszutko <jakub.rzeszutko@nordicsemi.no>
Signed-off-by: Krzysztof Chruściński <krzysztof.chruscinski@nordicsemi.no>
This commit is contained in:
Jakub Rzeszutko 2019-01-29 11:40:08 +01:00 • committed by Carles Cufí
commit ce6be8600b
8 changed files with 67 additions and 44 deletions
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8
subsys/shell/shell_uart.c
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@ -91,12 +91,12 @@ static void uart_rx_handle(const struct shell_uart *sh_uart)
static void uart_tx_handle(const struct shell_uart *sh_uart)
{
u32_t len;
u8_t *data;
int err;
struct device *dev = sh_uart->ctrl_blk->dev;
u32_t len;
int err;
const u8_t *data;
len = ring_buf_get_claim(sh_uart->tx_ringbuf, &data,
len = ring_buf_get_claim(sh_uart->tx_ringbuf, (u8_t **)&data,
sh_uart->tx_ringbuf->size);
if (len) {
len = uart_fifo_fill(dev, data, len);